SOLVED Keep getting 'STATUS_HEAP_CORRUPTION' and 'Error loading vehicle' errors - no mods

EDIT: RESOLVED. It was my CPU that was the culprit, so these crashes were happening due to a hardware failure. Luckily, I still had the warranty.

I keep getting the error STATUS_HEAP_CORRUPTION when I use around 5 cars. Not sure why, as my memory is 64GB 6000 mHz (and also a 4080 if that matters), so the rig's more than capable to deal with the game. I also get this error a lot:

(happens with any vehicle sometimes, not just midsize. Also happens a lot more often when I have traffic enabled, with 'vehicle: simple_traffic')

I have done the following things:
Disabled all mods.
Cache clean
Deep cache clean
Old version cache cleaning
Verified game integ.
Did a complete clean reinstall of the game (yes I made sure I removed any remnants of the game after uninstalling following the tutorial)
Clean reinstall graphics driver

I even played in safe mode. I haven't had the STATUS_HEAP_CORRUPTION happen yet, but I did still get the "Error loading vehicle" error, which happens more often over time in 1 game session.

So, I have absolutely no idea why this is happening. It's incredibly frustrating tho, as I just cannot play the game normally anymore, it just never lasts longer than around 30 minutes before I get some kind of error or just a straight-up crash. Can anybody help me figure this out and solve the problem?

 

And yes, I did remove the user data folder in AppData and the beamng folder in Documents. Didn't help.

 

Nobody? I also get this one a lot, see screenshot