That's right yeah, with RT on the differences you really have to look closely to notice so I'd still probably be playing with it off assuming when the DLC lands that they don't improve RT usage somehow like adding proper RTGI/RTAO which it currently is not using, but highly doubt they will.
I've uninstalled it now (after having a quick go on a few previous saves to confirm performance in the game itself) but I fully expect RT off benchmark would be well above 120fps now given the lack of stuttering bringing the fps average down like before.
You'd also still want FSR enabled because it provides superior AA vs temporal/no upscaling since the game offers no other method to remove jaggies.