Crashes maybe caused by graphics cards memory overflow

Hi guys,
as already reported, there are many crashes happening on PC, less in single player and more in multiplayer.
I was trying to find out what was going on and it’s possible i ping pointed a possible cause.
It seems that even if my GeForce Experience tells me that the game is optimised, I decided to keep an eye on my GTX960 with GPU-Z.
I saw that when the game crashed, my graphic card memory was full (the whole 2GB).
I decided to lower my graphic settings more and the game seems to crash less.
Sadly i didn’t have the chance to test this in multi player after i did that.

I added GPU memory usage to my MSI Afterburner hardware monitor and it tops at 5366MB.