Crash loop in gridania

[Vulcwen]

I have been troubleshooting it for a bit. After a lot of tries I managed to get one crash that actually had an error report:
The issue seems to be in nvwgf2umx.dll (address 954109 and some other addresses in the 95k range). Also, I got this on a fullscreen attempt, so my screenshot captured nothing.

I've tried to log in repeatedly for about 45m, a few times I managed to move a few yalms before crashing. Notably it did not happen when I logged in on an alt in revenant's toll, and I also tried to create a new alt which didn't crash until I got out of the tutorial and started to move to a part of Ul Dah where more than a few player characters are.
I tried the DX9 setting and that seems to resolve the crash, but shadowbringers doesn't seem to behave nicely with it (yellow screen flickering).

About the systems report, that contains a lot of info I don't want to disclose publicly (which a forum post is).
In any case, that error and the few suggestions here, and the fact it doesn't crash on DX9 seem to point to a graphics issue, so I'll try a clean driver install (someone suggested that to me), will update this post if that resolved the issue on DX11.

EDIT: it seemed to do the trick, it still crashes occasionally, but can go hours without crashing now.