Not only in games, I switched from Windows 10 to LXQT and I can finally open more than 3 programs at the same time without the pc hanging for 10 seconds every time I switched between programs

Just use the block button, no need to cry about it

I know

Also don't forget the --clean-deps flag when uninstalling a package with zypper to remove unneeded dependencies, for example "sudo zypper rm --clean-depts package_name"

Yes, why not?