What’s the difference between Garuda, endeavour OS and Manjaro? Genuine question

EndeavourOS is a terminal-centic distro (it isn’t trying to be very user friendly but just easy to install and with some very important stuff included). Garuda has some modern performance improvements (preload, Zen kernel etc) and generally a lot of stuff preinstalled. Manjaro tries to be a general good easy to use desktop distro without Garuda’s optimization stuff but it’s quite bad at it because of poor management of the project

Awesome, thank you. Is Garuda stable enough for daily use beside gaming? Also, how much of a difference does it give in performance over others?

It really depends on your hardware. I don’t think you’ll have any boosts. The “Gaming Edition” can even be worse than avrrage because of the amount of purely aesthetic whistles preinstalled. I think it’s more about performance in regular tasks on modern machines. Preload will greatly improve app loading times there. For gaming just use a rolling release distro to get newest drivers. I also wouldn’t recommend running GNOME because it seems to decrease gaming performance here and there. Other than that it doesn’t really matter and in case something does you can install/tweak it on other distros as well