color glitch

[Delta914-jordy]

I have this strange color glitch.

and at some points it is blue or black or white at some other points it looks like the original good one. how can I solve this? I already run it on the lowest resolution graphics ect. (My pc isn't a good game pc) the gameplay works the units look good some objects too but some are in strange (Inverted) colors.
How can I solve this?
PS Hello I am new!