I just tested all 6 combinations, and it only occurs with trigger flash on. I initially turned trigger flash on expecting some indicator to flash if I was lagging, and was surprised at how consistently it did so when using primary fire. I was expecting it to flash during sporadic dips in framerate, not on every shot. I presumed that this meant something was wrong, especially since my fps counter is usually well above the monitor refresh rate setting.
I’m not sure I understand, is the square supposed to constantly be there, on every displayed frame? Right now it appears during the conditions in my first post and disappears immediately afterward, i.e. it flashes on screen, which was what I presumed should happen.
If this is monitor dependent, I’m currently running a Dell u2414h with the display panel overclocked to 72hz, and the game set for a 72hz refresh rate. Running the 461.72 nvidia driver right now.