It can be an indication of some sense of corruption if your crash comes guaranteed at certain percentage every single time, likeif you knwo you crash right at 58% more than ten times in a row.
When you uninstalled BG 3, did you make sure it was a clean reinstallation, like no traces left behidn from previous installment of BG 3?
Because I have no issues using BG 3 on Steam, I hope it got nothing to do with system or graphics card files that click wrong.