I am assuming you mean Quake 2
rtx? The GoG version does not come with the dlss file nvngx_dlss.dll but the game supports it. So you may want to give it a try if that is relevant to your situation.
I grabbed a version here
. I'm using version 220.127.116.11 fwiw
When I first played Q2rtx with rtx enabled the performance was bad, no question about it. But once I installed and configured dlss the performance is a very stable 60fps and card temperature is way down.
I do play games at 1080p though.