Hello.... I have this problem since version 3.
When I am on the default commander position all is good on fps..... But when I choose the thermal screen monitor.. then fps goes down to 9 or less. This is not only in M1 but also in Leopard tanks.
both TVs are with animation of what is seen.. so I don't know why is this produced. I am in window mode with latest drivers, windows10, 980ti nvidia, i7 at 4.0ghz, 16gb ram, and playing 5040x1050