I recently updated from Windows 7 to Windows 10 and now I can barely play ESO on the minimal graphics setting, where previously I played with no problem with personalized settings above high. I'm using an NVidia card with GeForce Experience, which suggests that I continue using the old graphics settings that it had me at before (set higher than high), but clearly this isn't right.

I've searched everywhere for things that could be running in the background that I could turn off. I have the bare minimum of programs starting when the computer boots up (no more than I had when I ran Win7), I shut off all notifications, all background applications in the settings, Cortana is off, OneDrive is off, Windows Defender is off and no other anti-virus programs are running, and I actually have significantly more free HD space than I had when I was using Win7 so that's not an issue. I haven't changed any of my addons and I only run about 6 anyway (nothing like Master Merchant which I know can hog resources, just things like a helmet toggle). I've actually gone through every Windows setting one by one to see what I could turn off and I can't seem to get any better performance. I searched the web for tips on how to optimize Win10 for gaming and found the things that I've already done along with things I don't want to do (like manually editing the registry), which hardly seems like it should be necessary anyway.

I could understand maybe a small performance drop, but this is major. Like I said, I used to play with graphics settings above high and now the game lags heavily with minimal settings. I noticed that the updated launcher also set my client version to 64-bit by default, so I tried switching back to the 32-bit version and that helped slightly, but not even enough to get rid of all the lag on minimal settings. I also tried all these things right after freshly booting the computer, just to make sure there weren't any background processes hanging around from doing other things on the computer over the course of several hours. I also checked all my drivers, my DirectX version, everything I could think of that might need updating.

Is this a known problem? Am I really stuck being basically incapable of playing a game that once ran perfectly fine just because I upgraded to Windows 10?