I always hear people say they sometimes have issues with games but I've switched to Linux relatively recently and I still haven't had a game in my library that didn't play.
On the other hand I have a laptop with Intel and dedicated Nvidia card. Longterm ongoing heat problems (one heat pipe, one cooler, bad placement, thanks Dell) killed the Nvidia card.
Windows couldn't run anymore and couldn't be installed again.
With linux the laptop works again, at least with the Intel 3rd generation card.
This was me last week when my wife wanted to play a PC game together and I threw the PC to the TV via HDMI for the first time since I switched from Windows to Arch. The audio would not work at all despite all the settings being very clear that it should be sending the audio over the HDMI. Same physical/hardware/cable/TV as the setup that worked flawlessly in Windows. Still not thrilled about that one.
Make sure it's sending to the correct port, if you go into the audio device management of whatever your desktop environment of choice was you should notice that you have the advanced options on the HDMI to select which HDMI port it's going to
I installed KDE Neon on Friday evening and things were going great, everything was testing well, and Saturday game night with the gang went flawlessly, but this morning the VMWare Horizon Linux client spontaneously decided that it didn't want to accept mouse input anymore, so after ten minutes of troubleshooting I gave up and booted back into Windows so that I can be productive today.
It's crazy how much better things are now.
I had the same reaction some weeks ago when I wanted to play Leathal Company with friends and remembered I'm on Linux while they all used some 3rd party Windows only mod manager.
One day later I found r2modman in the AUR which automatically recognized Steam + Proton and everything just ran.
And there is even a Titanfall 2 cross platform mod program!!!!
The sofware support just keeps getting better every day.
What games are you trying? Off the top of my head, I've played monster hunter world, hunt showdown, cyberpunk 2077, baldur's gate 3, norman reedus and the funky fetus, elden ring, deep rock galactic, doom (the new ones), apex, the dark souls games, warframe, and a few more over the years.
I havent played a multiplayer game for more than an hour in years, but I especially avoid trends like fall guys and fortnite, so it isnt anticheat or anything.
As for the card, I bought it before it became apparent how overpriced it was, and it was a major upgrade from my second hand 970 anyway. And I didn't splurge, I saved and bought what I thought made sense for me, when I could've 'splurged' on a 3080.
Okay but with a 1660 super even on Windows that game won't run too well. I know its above minimum reqs but that card is old. Even my 2080 TI is starting to show some age with framerates and what.
This right here. I've spent a few hours troubleshooting why I can't play Hell Let Loose, which also uses EAC, even though it should support Linux. Turned out, that you need to specifically search for (in your Library) and install "Proton EasyAntiCheat Runtime", which is a separate game that for some reason didn't get installed when you install the game.
I suppose it's going to be the same with Battlebit, because I'm sure I played it on Linux and had 0 issues.
One of my friends and I end up troubleshooting for an hour before we can actually start playing games. Every single time. Linux just doesn't want us to play games together, I guess.