I had MASSIVE problems with the good ol DirectX crashes since EW release, i had like 10 per day or more. The more patches came, the fewer i had.
But now with 6.3, oh boy. Im getting a good 5 of them per day at minimum.
Just wanted to keep the topic alive, not much i or anyone else can do.
Still no words from the developers that they know about this after all these years. Very sad!

Ill list most of the things i tried tho in hopes that someone can fix their errors with any of them. I unfortunately couldnt:

Clean install of Windows 10 (2 times)
Clean install of Windows 11 (3 times)
Clean install of the game (many times)
Not using ReShade/Gshade
Not using any Overlay (Steam, RivaTuner, GeForce, Discord, etc.)
Repair game with the launcher
Verify file integrity through third party hash check
Underclock GPU
Overclock GPU
Undervolt GPU
Overvolt GPU
Decrease GPU Power Target
Increase GPU Power Target
BIOS Reset
Remove CPU OC
Monitor temperatures before and after crashes
Monitor voltages before and after crashes
Try out different GPU
Try out different RAM
Trying different soundcards
Check windows activity monitor, sort out errors (none are related or worrying)
Install game on different drives (C and D)
Try different Nvidia drivers, old and new
All drivers updated, for every program (older and newest have been tried)
Try it on a different machine (MacBook Air, no crashes with or without character files)
FPS lock to 120, formerly 144

Good luck to everyone whos also struggling!