diff --git a/Makefile b/Makefile
index 5eb9277..87d8918 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 PREFIX ?= /usr/local
 DOCDIR ?= $(PREFIX)/share/btop/doc
 CXX = g++
-override CXXFLAGS += -std=c++20 -pthread -Wall -Wextra
+override CXXFLAGS += -std=c++20 -O3 -pthread -Wall -Wextra -pedantic
 INCLUDES = -I./src
 
 btop: btop.cpp
diff --git a/btop.cpp b/btop.cpp
index d6c2644..893c272 100644
--- a/btop.cpp
+++ b/btop.cpp
@@ -18,6 +18,7 @@ tab-size = 4
 
 
 #include <string>
+#include <array>
 #include <vector>
 #include <thread>
 #include <future>
@@ -45,14 +46,14 @@ tab-size = 4
     #endif
 #endif
 
-using std::string, std::vector, std::map, std::atomic, std::endl, std::cout, std::views::iota;
+using std::string, std::vector, std::array, std::map, std::atomic, std::endl, std::cout, std::views::iota;
 using namespace Tools;
 
 
 //? ------------------------------------------------- GLOBALS ---------------------------------------------------------
 
 namespace Global {
-	const vector<vector<string>> Banner_src = {
+	const vector<array<string, 2>> Banner_src = {
 		{"#E62525", "██████╗ ████████╗ ██████╗ ██████╗"},
 		{"#CD2121", "██╔══██╗╚══██╔══╝██╔═══██╗██╔══██╗   ██╗    ██╗"},
 		{"#B31D1D", "██████╔╝   ██║   ██║   ██║██████╔╝ ██████╗██████╗"},
@@ -64,7 +65,7 @@ namespace Global {
 	const string Version = "0.0.1";
 
 	string banner;
-	uint banner_width;
+	const uint banner_width = 49;
 }
 
 
@@ -90,22 +91,16 @@ void argumentParser(int argc, char **argv){
 }
 
 //* Generate the btop++ banner
-auto createBanner(){
-	struct out_vals {
-		uint w;
-		string s;
-	};
+string createBanner(){
 	size_t z = 0;
-	uint width=0, new_len=0;
 	string b_color, bg, fg, out, oc, letter;
 	bool truecolor = Config::getB("truecolor");
 	int bg_i;
 	for (auto line: Global::Banner_src) {
-		if ((new_len = ulen(line[1])) > width) width = new_len;
 		fg = Theme::hex_to_color(line[0], !truecolor);
 		bg_i = 120-z*12;
 		bg = Theme::dec_to_color(bg_i, bg_i, bg_i, !truecolor);
-		for (uint i = 0; i < line[1].size(); i += 3) {
+		for (size_t i = 0; i < line[1].size(); i += 3) {
 			if (line[1][i] == ' '){
 				letter = ' ';
 				i -= 2;
@@ -117,12 +112,11 @@ auto createBanner(){
 			out += letter;
 			oc = b_color;
 		}
-		z++;
-		if (z < Global::Banner_src.size()) out += Mv::l(new_len) + Mv::d(1);
+		if (++z < Global::Banner_src.size()) out += Mv::l(ulen(line[1])) + Mv::d(1);
 	}
 	out += Mv::r(18 - Global::Version.size()) + Fx::i + Theme::dec_to_color(0,0,0, !truecolor, "bg") +
-			Theme::dec_to_color(150, 150, 150, !truecolor) + "v" + Global::Version + Fx::reset;
-	return out_vals {width, out};
+			Theme::dec_to_color(150, 150, 150, !truecolor) + "v" + Global::Version + Fx::ui;
+	return out;
 }
 
 
@@ -171,9 +165,7 @@ int main(int argc, char **argv){
 	Theme::set(Global::Default_theme);
 
 	//? Create the btop++ banner
-	auto [banner_width, banner] = createBanner();
-	Global::banner_width = move(banner_width);
-	Global::banner = move(banner);
+	Global::banner = createBanner();
 
 
 	//* ------------------------------------------------ TESTING ------------------------------------------------------
@@ -190,7 +182,7 @@ int main(int argc, char **argv){
 
 	cout << Mv::r(Term::width / 2 - Global::banner_width / 2) << Global::banner << endl;
 	// cout << string(Term::width - 1, '-') << endl;
-	int ill;
+	int ill = 0;
 	for (int i : iota(0, (int)Term::width)){
 		ill = (i <= (int)Term::width / 2) ? i : ill - 1;
 		cout << Theme::g("used")[ill] << "-";
@@ -198,8 +190,7 @@ int main(int argc, char **argv){
 	cout << Fx::reset << endl;
 
 	//* Test theme
-
-	if (true) {
+	if (false) {
 		cout << "Theme generation took " << time_ms() - thts << "ms" << endl;
 
 		cout << "Colors:" << endl;
@@ -282,7 +273,6 @@ int main(int argc, char **argv){
 	uint64_t tsl, timestamp2;
 	uint timer = 2000;
 	bool filtering = false;
-	vector<string> sorting;
 	bool reversing = false;
 	int sortint = Proc::sort_map["cpu lazy"];
 	vector<string> greyscale;
@@ -303,19 +293,19 @@ int main(int argc, char **argv){
 	while (key != "q") {
 		timestamp = time_ms();
 		tsl = timestamp + timer;
-		auto plist = Proc::collect(Proc::sort_vector[sortint], reversing, filter);
+		auto plist = Proc::collect(Proc::sort_array[sortint], reversing, filter);
 		timestamp2 = time_ms();
 		timestamp = timestamp2 - timestamp;
 		ostring.clear();
 		lc = 0;
 		filter_cur = (filtering) ? Fx::bl + "█" + Fx::reset : "";
 		ostring = Mv::save + Mv::u(2) + Mv::r(20) + trans(rjust("Filter: " + filter + filter_cur + string(Term::width / 3, ' ') +
-				 "Sorting: " + string(Proc::sort_vector[sortint]), Term::width - 25, true, filtering)) + Mv::restore;
+				 "Sorting: " + string(Proc::sort_array[sortint]), Term::width - 25, true, filtering)) + Mv::restore;
 
-		for (Proc::proc_info& procs : plist){
-			ostring += 	Mv::r(1) + greyscale[lc] + rjust(to_string(procs.pid), 8) + " " + ljust(procs.name, 16) + " " + ljust(procs.cmd, Term::width - 66, true) + " " +
-						rjust(to_string(procs.threads), 5) + " " + ljust(procs.user, 10) + " " + rjust(floating_humanizer(procs.mem, true), 5) + string(11, ' ');
-			ostring += (procs.cpu_p > 100) ? rjust(to_string(procs.cpu_p), 3) + " " : rjust(to_string(procs.cpu_p), 4);
+		for (auto& p : plist){
+			ostring += 	Mv::r(1) + greyscale[lc] + rjust(to_string(p.pid), 8) + " " + ljust(p.name, 16) + " " + ljust(p.cmd, Term::width - 66, true) + " " +
+						rjust(to_string(p.threads), 5) + " " + ljust(p.user, 10) + " " + rjust(floating_humanizer(p.mem, true), 5) + string(11, ' ');
+			ostring += (p.cpu_p > 100) ? rjust(to_string(p.cpu_p), 3) + " " : rjust(to_string(p.cpu_p), 4);
 			ostring += "\n";
 			if (lc++ > Term::height - 21) break;
 		}
@@ -326,18 +316,17 @@ int main(int argc, char **argv){
 		while (time_ms() < tsl) {
 			if (Input::poll(tsl - time_ms())) key = Input::get();
 			else { key.clear() ; continue; }
-			// if (key != "") continue;
 			if (filtering) {
 				if (key == "enter") filtering = false;
 				else if (key == "backspace") {if (!filter.empty()) filter = uresize(filter, ulen(filter) - 1);}
 				else if (key == "space") filter.push_back(' ');
 				else if (ulen(key) == 1 ) filter.append(key);
-				else { key.clear() ; continue; }
+				else { key.clear(); continue; }
 				break;
 			}
 			else if (key == "q") break;
-			else if (key == "left") { if (--sortint < 0) sortint = (int)Proc::sort_vector.size() - 1; }
-			else if (key == "right") { if (++sortint > (int)Proc::sort_vector.size() - 1) sortint = 0; }
+			else if (key == "left") { if (--sortint < 0) sortint = (int)Proc::sort_array.size() - 1; }
+			else if (key == "right") { if (++sortint > (int)Proc::sort_array.size() - 1) sortint = 0; }
 			else if (key == "f") filtering = true;
 			else if (key == "r") reversing = !reversing;
 			else if (key == "delete") filter.clear();
diff --git a/src/btop_config.h b/src/btop_config.h
index 41f95f1..e510a1d 100644
--- a/src/btop_config.h
+++ b/src/btop_config.h
@@ -21,11 +21,11 @@ tab-size = 4
 
 #include <string>
 #include <vector>
-#include <map>
+#include <unordered_map>
 
 #include <btop_tools.h>
 
-using std::string, std::vector, std::map;
+using std::string, std::vector, std::unordered_map;
 using namespace Tools;
 
 
@@ -35,7 +35,7 @@ namespace Config {
 
 		bool changed = false;
 
-		map<string, string> strings = {
+		unordered_map<string, string> strings = {
 			{"color_theme", "Default"},
 			{"shown_boxes", "cpu mem net proc"},
 			{"proc_sorting", "cpu lazy"},
@@ -52,7 +52,7 @@ namespace Config {
 			{"net_iface", ""},
 			{"log_level", "WARNING"}
 		};
-		map<string, bool> bools = {
+		unordered_map<string, bool> bools = {
 			{"theme_background", true},
 			{"truecolor", true},
 			{"proc_reversed", false},
@@ -84,12 +84,12 @@ namespace Config {
 			{"show_battery", true},
 			{"show_init", false}
 		};
-		map<string, int> ints = {
+		unordered_map<string, int> ints = {
 			{"update_ms", 2000},
 			{"proc_update_mult", 2},
 			{"tree_depth", 3}
 		};
-	};
+	}
 
 	//* Return config value <name> as a bool
 	bool& getB(string name){
@@ -128,6 +128,6 @@ namespace Config {
 		(void)source;
 		return true;
 	}
-};
+}
 
 #endif
\ No newline at end of file
diff --git a/src/btop_globs.h b/src/btop_globs.h
index 5443367..53bc2a7 100644
--- a/src/btop_globs.h
+++ b/src/btop_globs.h
@@ -20,17 +20,18 @@ tab-size = 4
 #define _btop_globs_included_ 1
 
 #include <string>
-#include <map>
 #include <vector>
+#include <array>
 #include <atomic>
+#include <unordered_map>
 
-using std::string, std::vector, std::map, std::atomic;
+using std::string, std::vector, std::unordered_map, std::array, std::atomic;
 
 namespace Global {
 
 	atomic<bool> stop_all(false);
 
-	const map<string, string> Default_theme = {
+	const unordered_map<string, string> Default_theme = {
 		{ "main_bg", "#00" },
 		{ "main_fg", "#cc" },
 		{ "title", "#ee" },
@@ -75,7 +76,7 @@ namespace Global {
 		{ "process_end", "#d45454" }
 	};
 
-	const map<string, map<string, vector<string>>> Menus = {
+	const unordered_map<string, unordered_map<string, vector<string>>> Menus = {
 		{ "options", {
 			{ "normal", {
 				"┌─┐┌─┐┌┬┐┬┌─┐┌┐┌┌─┐",
@@ -115,8 +116,8 @@ namespace Global {
 	};
 
 	//? Units for floating_humanizer function
-	const vector<string> Units_bit = {"bit", "Kib", "Mib", "Gib", "Tib", "Pib", "Eib", "Zib", "Yib", "Bib", "GEb"};
-	const vector<string> Units_byte = {"Byte", "KiB", "MiB", "GiB", "TiB", "PiB", "EiB", "ZiB", "YiB", "BiB", "GEB"};
+	const array<string, 11> Units_bit = {"bit", "Kib", "Mib", "Gib", "Tib", "Pib", "Eib", "Zib", "Yib", "Bib", "GEb"};
+	const array<string, 11> Units_byte = {"Byte", "KiB", "MiB", "GiB", "TiB", "PiB", "EiB", "ZiB", "YiB", "BiB", "GEB"};
 
 }
 
@@ -132,7 +133,7 @@ namespace Symbols {
 	const string div_up			= "┬";
 	const string div_down		= "┴";
 
-	const vector<string> superscript = { "⁰", "¹", "²", "³", "⁴", "⁵", "⁶", "⁷", "⁸", "⁹" };
+	const array<string, 10> superscript = { "⁰", "¹", "²", "³", "⁴", "⁵", "⁶", "⁷", "⁸", "⁹" };
 }
 
 #endif
diff --git a/src/btop_input.h b/src/btop_input.h
index f712408..cf7235e 100644
--- a/src/btop_input.h
+++ b/src/btop_input.h
@@ -20,13 +20,13 @@ tab-size = 4
 #define _btop_input_included_ 1
 
 #include <string>
-#include <map>
+#include <unordered_map>
 #include <iostream>
 
 #include <btop_globs.h>
 #include <btop_tools.h>
 
-using std::string, std::map, std::cin;
+using std::string, std::unordered_map, std::cin;
 using namespace Tools;
 
 
@@ -34,7 +34,7 @@ using namespace Tools;
 namespace Input {
 	namespace {
 		//* Map for translating key codes to readable values
-		const map<string, string> Key_escapes = {
+		const unordered_map<string, string> Key_escapes = {
 			{"\033",	"escape"},
 			{"\n",		"enter"},
 			{" ",		"space"},
@@ -69,7 +69,7 @@ namespace Input {
 			{"[23~",	"f11"},
 			{"[24~",	"f12"}
 		};
-	};
+	}
 
 	//* Last entered key
 	string last = "";
@@ -108,6 +108,6 @@ namespace Input {
 		last.clear();
 	}
 
-};
+}
 
 #endif
\ No newline at end of file
diff --git a/src/btop_linux.h b/src/btop_linux.h
index 56a504b..8fae095 100644
--- a/src/btop_linux.h
+++ b/src/btop_linux.h
@@ -21,7 +21,8 @@ tab-size = 4
 
 #include <string>
 #include <vector>
-#include <map>
+#include <array>
+#include <unordered_map>
 #include <atomic>
 #include <fstream>
 #include <filesystem>
@@ -34,7 +35,7 @@ tab-size = 4
 #include <btop_tools.h>
 
 
-using std::string, std::vector, std::map, std::ifstream, std::atomic, std::numeric_limits, std::streamsize;
+using std::string, std::vector, std::array, std::ifstream, std::atomic, std::numeric_limits, std::streamsize, std::unordered_map;
 namespace fs = std::filesystem;
 using namespace Tools;
 
@@ -65,8 +66,8 @@ namespace Proc {
 			string name, cmd, user;
 			uint64_t cpu_t = 0, cpu_s = 0;
 		};
-		map<uint, p_cache> cache;
-		map<string, string> uid_user;
+		unordered_map<uint, p_cache> cache;
+		unordered_map<string, string> uid_user;
 		fs::path passwd_path;
 		fs::file_time_type passwd_time;
 		uint counter = 0;
@@ -76,7 +77,7 @@ namespace Proc {
 
 	atomic<bool> stop (false);
 	atomic<bool> running (false);
-	vector<string> sort_vector = {
+	array<string, 8> sort_array = {
 		"pid",
 		"name",
 		"command",
@@ -86,7 +87,7 @@ namespace Proc {
 		"cpu direct",
 		"cpu lazy",
 	};
-	map<string, uint> sort_map;
+	unordered_map<string, uint> sort_map;
 
 	//* proc_info: pid, name, cmd, threads, user, mem, cpu_p, cpu_c
 	struct proc_info {
@@ -146,8 +147,8 @@ namespace Proc {
 				return procs;
 			}
 			pid_str = fs::path(d.path()).filename();
-			cpu = 0.0;
-			rss_mem = 0;
+			cpu = 0.0; cpu_s = 0.0; cpu_t = 0;
+			rss_mem = 0; threads = 0;
 			new_cache = false;
 			if (d.is_directory() && isdigit(pid_str[0])) {
 				pid = stoul(pid_str);
@@ -284,7 +285,7 @@ namespace Proc {
 
 		//* Clear dead processes from cache at a regular interval
 		if (++counter >= 10000 || (filter.empty() && cache.size() > procs.size() + 100)) {
-			map<uint, p_cache> r_cache;
+			unordered_map<uint, p_cache> r_cache;
 			counter = 0;
 			for (auto& p : c_pids) r_cache[p] = cache[p];
 			cache = move(r_cache);
@@ -301,9 +302,9 @@ namespace Proc {
 		tstamp = time_ms();
 		passwd_path = (fs::exists(fs::path("/etc/passwd"))) ? fs::path("/etc/passwd") : passwd_path;
 		uint i = 0;
-		for (auto& item : sort_vector) sort_map[item] = i++;
+		for (auto& item : sort_array) sort_map[item] = i++;
 	}
-};
+}
 
 
 
diff --git a/src/btop_theme.h b/src/btop_theme.h
index a8791f4..98d23eb 100644
--- a/src/btop_theme.h
+++ b/src/btop_theme.h
@@ -23,13 +23,14 @@ tab-size = 4
 #include <cmath>
 #include <vector>
 #include <map>
+#include <unordered_map>
 #include <ranges>
 
 #include <btop_globs.h>
 #include <btop_tools.h>
 #include <btop_config.h>
 
-using std::string, std::round, std::vector, std::map, std::stoi, std::views::iota, std::array;
+using std::string, std::round, std::vector, std::map, std::stoi, std::views::iota, std::array, std::unordered_map;
 using namespace Tools;
 
 namespace Theme {
@@ -98,16 +99,16 @@ namespace Theme {
 		else return pre + to_string(r) + ";" + to_string(g) + ";" + to_string(b) + "m";
 	}
 
-	//* Return a map of "r", "g", "b", 0-255 values for a 24-bit color escape string
-	map<string, int> esc_to_rgb(string c_string){
-		map<string, int> rgb = {{"r", 0}, {"g", 0}, {"b", 0}};
+	//* Return an array of red, green and blue, 0-255 values for a 24-bit color escape string
+	auto esc_to_rgb(string c_string){
+		array<int, 3> rgb = {-1, -1, -1};
 		if (c_string.size() >= 14){
 			c_string.erase(0, 7);
 			auto c_split = ssplit(c_string, ";");
 			if (c_split.size() == 3){
-				rgb["r"] = stoi(c_split[0]);
-				rgb["g"] = stoi(c_split[1]);
-				rgb["b"] = stoi(c_split[2].erase(c_split[2].size()));
+				rgb[0] = stoi(c_split[0]);
+				rgb[1] = stoi(c_split[1]);
+				rgb[2] = stoi(c_split[2].erase(c_split[2].size()));
 			}
 		}
 		return rgb;
@@ -115,9 +116,9 @@ namespace Theme {
 
 
 	namespace {
-		map<string, string> colors;
-		map<string, array<int, 3>> rgbs;
-		map<string, array<string, 101>> gradients;
+		unordered_map<string, string> colors;
+		unordered_map<string, array<int, 3>> rgbs;
+		unordered_map<string, array<string, 101>> gradients;
 
 		//* Convert hex color to a array of decimals
 		array<int, 3> hex_to_dec(string hexa){
@@ -141,7 +142,7 @@ namespace Theme {
 		}
 
 		//* Generate colors and rgb decimal vectors for the theme
-		void generateColors(map<string, string>& source){
+		void generateColors(unordered_map<string, string>& source){
 			vector<string> t_rgb;
 			string depth;
 			colors.clear(); rgbs.clear();
@@ -209,7 +210,7 @@ namespace Theme {
 
 
 	//* Set current theme using <source> map
-	void set(map<string, string> source){
+	void set(unordered_map<string, string> source){
 		generateColors(source);
 		generateGradients();
 		Term::fg = colors.at("main_fg");
@@ -222,16 +223,16 @@ namespace Theme {
 		return colors.at(name);
 	}
 
-	//* Return vector of escape codes for color gradient <name>
+	//* Return array of escape codes for color gradient <name>
 	auto g(string name){
 		return gradients.at(name);
 	}
 
-	//* Return vector of red, green and blue in decimal for color <name>
+	//* Return array of red, green and blue in decimal for color <name>
 	auto dec(string name){
 		return rgbs.at(name);
 	}
 
-};
+}
 
 #endif
\ No newline at end of file
diff --git a/src/btop_tools.h b/src/btop_tools.h
index a2a9f54..aad41ba 100644
--- a/src/btop_tools.h
+++ b/src/btop_tools.h
@@ -33,7 +33,7 @@ tab-size = 4
 
 #include <btop_globs.h>
 
-using std::string, std::vector, std::map, std::regex, std::max, std::to_string, std::cin;
+using std::string, std::vector, std::regex, std::max, std::to_string, std::cin;
 
 //? ------------------------------------------------- NAMESPACES ------------------------------------------------------
 
@@ -82,7 +82,7 @@ namespace Fx {
 	string uncolor(string& s){
 		return regex_replace(s, color_regex, "");
 	}
-};
+}
 
 //* Collection of escape codes and functions for cursor manipulation
 namespace Mv {
@@ -106,7 +106,7 @@ namespace Mv {
 
 	//* Restore saved cursor postion
 	const string restore = Fx::e + "u";
-};
+}
 
 //* Collection of escape codes and functions for terminal manipulation
 namespace Term {
@@ -138,7 +138,7 @@ namespace Term {
 			height = w.ws_row;
 			return resized;
 		}
-	};
+	}
 
 
 	//* Hide terminal cursor
@@ -214,7 +214,7 @@ namespace Term {
 			initialized = false;
 		}
 	}
-};
+}
 
 //? --------------------------------------------------- FUNCTIONS -----------------------------------------------------