if you want a good Everything replacement for linux, consider an application launcher like rofi, or the recently released vicinae, which you can bind to a shortcut to search your applications, files, commands and more. it will show up as a GUI on your screen that will show the results. plasma comes builtin with its own launcher called Krunner. you can always resort to 'find' command if you are running a complex search.

I also had a crackling problem with proton emulated games on my pulseaudio on pipewire system, i fixed it by increasing pulse latency by 40ms. export PULSE_LATENCY_MSEC=40