I am having an increase in fps also, from 25(summerset) to 40 ( stormhaven ) now i reach 50-60 in many areas. What wasnt tested? Raids/cyro. I might come back to edit the post with results. Current settings as seen in the SCREEN. I had similar fps with 1440p BUT the mac was exhaling alot of heat so I reduced the resolution to 2048x1152 at which point and with the above setting i am getting a low hum that I feel more comfortable with.
My iMac on windows as i tested it a few days ago has a stable 60+ on bootcamp with all maxed ( sliders and options) BUT again the exhaling ( venting) is insane ( not to mention apfs filesystem is not recognised by the bootcamp so recovery etc etc).
My conclusion and given the crash is delayed right now to 4-5 h I d think this was a good patch. Force quit is still a thing at times also. More focus Zenimax, dont give up on fixes