Going up the GPU hierarchy resulting in lower frame rates (?)

[Pipe & Slippers]

Playing Path of Exile on Steam - the only game I play and that’s very intermittently
I‘m on a bit more than a HD monitor, playing windowed, so slightly less than 1920 x 1200

In February I upgraded from a 1060 6Gb to a 1070. I noticed that the frame rate seemed to drop from a pretty steady 60 occasionally 45, to mid 40’s and only ocassionaly getting up to a steady 60. Didn’t bother me too much since for me it was still pretty playable
I’ve just upgraded again to a 1080ti (in the now seemingly laughable hope of playing on my 4k screen!) and spent 30 mins gaming and the frame counter (I assume this is the steam one) seems to be more in the 30’s and 40’s. At one point it was stuck in the mid 20’s for what seemed like ages but was probably tens of seconds

Am I just noticing the extremes or is steam playing up, or does anyone have any insights?
I’m wondering if my system is unbalanced in some way, or maybe my brain is unbalanced…perhaps I should have stuck with the 1060

 

[CuriousTomCat]

3 possiblities come to mind

1. Have you tried uninstalling and reinstalling the Nvidia drivers? The 1080ti should (in theory) work out the box without reinstalling the driver because it's from the same GPU family as the 1070. But since you're having framerate problems, it would be worth reinstalling anyway. Don't bother using DDU.
2. The 1080Ti could be thermal throttling. That would explain the lower framerate. Have you checked the temperature? It's a mini version (according to your sig) so it will have limited cooling.
3. I don't know about Exile but think some games auto-adjust the quality preset based on the GPU you have. So if a game detects a 1060, it may auto-select the medium quality preset. Or if it detects a 1080 it may auto-select the high quality preset. That could result in a 1080 getting a lower than expected framerate.

(for the benefit of those reading this on a phone, the OP has a Corsair RMx750 so the 1080 Ti should be getting sufficient power)

 

[Tetras]

I'd recommend you run a reliable benchmark to check your scores, which will help with establishing if one of @CuriousTomCat's suggestions is the problem.

 

[Pipe & Slippers]

Cheers folks. Will do as you suggested when I get the opportunity

 

[Pipe & Slippers]

Rather shamefully, uninstalling and reinstalling the drivers sorted the issue
18 years on the forum and I didn’t think to do that myself <<cringe>>

BTW despite it being in a itx case, the gpu temps were v modest and no cause for concern and cpu load hovered around 50%, so all good

Thanks for your advice!