Have you tried turning off chromatic abberation, motion blur, film grain and all that other extraneous fluff?
I have a 3060 and Control is one of my favourite games so I’ve put a lot of time into it with DLSS on but haven’t noticed what you’re describing.
I tend to fiddle with my settings until it looks and handles well but the aforementioned settings are always turned off first thing.
I have civ 3 running on my tablet through an emulator, could possibly even do civ 4 but haven’t tried that yet. It takes up next to no space, the graphics are light enough you could run it on a potato and it’s one of the best civ iterations I reckon.