Don't know if this may will help somebody or it's already posted, if that's the case, sorry for repeating posts. The point it's that i was having fatal graphics error, still having an AMD Ryzen 5 2600X 6-Core Processor with a NVIDIA GeForce GTX 1650, sometimes randomly crashed after passing turn, but always finishing the loading's bar after all battles, i tried everything, but nothing worked, although at the end i figured out the solution for my issue. It was caused bc my OS (Windows 10 Pro) wasn't using the full capacity for the game (Virtual Memory) and, although i tried Large Address's complement to solve it, it didn't work, bc it was being nullified by deffect in the OS configuration. So, what i did was go to Control Panel, System, read there how much Ram i had, then, go on the left side & clicked on Advanced Configuration of System, in the Performance's section, clicked on Configuration, choosed the tab for Advanced Options, clicked on Change in Virtual Memory's section, unchecked the Automatically manage paging file size for all drives box at the top of the same windows, clicked on the main hard drive, i have 2 hard drives of 1TB, one for the OS, Apps & games (C's unit) & other for storage (D'unit), in my case i choosed C's unit, then, clicked on Custom size, i have 15'9 usable Gb of Ram from 16, bc 1% it's for the OS, so, in Initial Size's box i put 24422 [1024(1Gb)x15'9(my ram)x1'5], in Maximum size 48844 [1024(1Gb)x15'9(my ram)x3], click on Establish, Accept, after done, you'll need to reboot the PC to make sure that the new configuration it's used. One time rebooted, i tested BOTET & BOTET AC & other mods too, after finishing turn or ending a battle, it never crashed me again.
PS: If you solved your issue doing this, but you add more RAM in the future, it would be recommendable to recalculate the new Initial & Maximum Size for your Virtual Memory. Btw, i read too that activating "Without file of pagination" in Virtual Memory's section solved, it should solve this too, although i didn't test it that. Anyways i wanted to share my situation if this could help somebody. Peace & long life to the Metal.