Heist crashes regularly when attacking enemies

In Heist I've crashed multiple times while my Heist companion is opening a chest, but only when I attacked the newly spawning enemies (the ones spawning from the wall).

I had the issue with Lightning Arrow and Tornado Shot so far.

The issue also happened when I tried to escape the Heist contract.

So far I've had the issue with Vinderi accompanying me. I'll run a couple more without Vinderi and update this post accordingly.
UPDATE: the crash also happened with other companions

The character I'm using is "Ingegred" in Mercenary SSF with the same setup I currently have.

Edit: also had this crash (crashing to main menu) while mapping