I actually just moved my gaming PC from Win11 to Mint Cinnamon 2 weeks ago. There was some driver fuckery (I have an Nvidia card) that made things a bit wonky but everything worked out after some adjustments.
Do you mostly game through steam? Do you install your games on a separate drive?
Steam makes the transition the easiest. All of my games “just worked” with Steam. There were a few modifications required to ensure stability with the games settings but it was mostly smooth sailing for me.
I just used thumb drives to pull all my games save files to and an external drive to back up all my installed games so I wouldn’t have to re download them. Save game files are usually pretty small so all of the ones I had backed up on a single thumb drive and Steam and Linux creates a faux Windows folder system for each game and you just reinsert the save games in those folder structures at the correct spot.
Sorry for the late reply but the driver stuff was me trying out proprietary vs community Nvidia drivers and then just weird things that would happen on restarts after switching/updating drivers. I have an intermittent issue where the primary monitor (I have two) alternates being entirely light grey, red, blue, and green upon startup I haven’t researched it yet because I just restart the computer and it is fine. And it has happened maybe 3 times over the last month (amongst dozens of restarts). There are a few things like that that only happened once so I wrote off the occurrence.
I have had the most luck with the proprietary Nvidia driver so far.