I have the same hardware (5800x3d and 3080) but the game settings seem to scale ok for me.
This is running 3440x1440p with DLSS quality.
GPU runs flat out.
If i run very aggressive DLSS or ultralow preset frame rate goes to 185fps.
However i still get stutter every time
Not sure why you have better luck, maybe you are running an older driver?
Can you upload your DXDIAG or at least reply your driver version??
I just updated the Nvidia driver today as i heard it improved the stuttering.
It doesn't 🤣
But the update made no difference to my frame rates.
I'm still on 140ish with a mix of settings.
