Up until recently I was using a gtx 1060 just fine. Not sure about the high end ray tracing stuff though.

I'd say give it a try, I had a great experience. Never had any proton issues with an nvidia card my self. Just keep in mind nvidia drivers on Linux are notorious for being bad. If you choose an LTS distro or one that packages the drivers you'll be fine though. Pop!_OS LTS with the nvidia drivers is what I ran.