Hi,
Forgot to mention that nad have tried both on and off for Vsync. Tried again just now and same result. The camera just won't move or is moving so slowly you can't see it. The mouse works fine in the menu's, just purely in the game.
Strange bug or issue. Mouse works fine in all other games ranging from Fallout 4 to Rack N Ruin, Tempest, ESO, Albion Online, etc.
I'll test another mouse on my PC just to see if there is some other conflict going on.
regards,
Jim