I am running 2070s and a 3600. You are not going to get RT but the game runs brilliantly. DLSS performance mode and I am getting between 74 and 60 FPS at 1440p TBF I am running adaptive sync on my freesync monitor so the FPS hit is not noticeable.
However I have 14 hours in since release and loved every min. Like you I was worried before launch that it would not hold up but fantastic experience so far.
Thanks for the info, I'm actually thinking about upgrading in a few months so I'll either hold out or just get the game soon and play it on what I have. Shame about RT, I was hoping for at least some of that.