Well, I am very pleased with my Gigabyte RTX 3080 Gaming OC on my 144Hz , WQHD (3.440x1.440). Around 20 to 30 fps uplift with pretty high settings and now with MSAA x 4 turned on too. High 80s to 144 fps with the A10C in heavy missions for instance. But the engine is holding the card back nonetheless. IL2 GB for example runs 144 locked on Ultra. Not as complex, I know, but still.
It clobbers games like The Division 2, Ghost Recon, Jedi Knight, The Witcher 3 into submission.
Also discovered the wonderful world of undervolting. Locked the card to it‘s factory 1800 MHz, thus reducing power consumption 100-150 W, (The Division 2 250 W even ! Who the eff programmed that beast?). No noticeable drop in performance, 1 - 4 fps.