Texture set to medium due to low video memory and random crashes

Hello, I have some technical problems with the game, currently I’m playing on a R5 5600x 32gb ram and RTX 3070 but the texture was automatically set to medium due to low video memory, the memory in task manager is somewhere around 4.5/8, but in ground realistic battles goes up to 7.2/8, also the game crashes random upon death, I think is related to the map, are there any advices/fixes for those issues?