I’m looking for Gsync / Freesync to get rid of screen tearing.
Gsync is Nvidia and Freesync AMD, right?
What exactly do I need to use Gsync/Freesync? I guess Monitor + GPU both have to be compatible.
Are there any downsides when using this on Linux?
Screen tearing that happens within refresh rate limit of the monitor is not related to lacking Freesync/Gsync.
You guess, you ask, yet you give 0 info about your actual setup. Now a single message suggestion that would tell you what you need to do just postponed to one or maybe more messages later.
nah It was just an overall question, I currently have no money to change anything at my setup :D