When I try to play COD MW 2 on Steam it plays in the minimum resolution of 680 x 480. If I try to adjust the resolution from the main game menu it hangs on resetting and task manager shows Iw4sp exe is not responding. Trying to adjust the resolution in game shows the resolution settings greyed out. Trying to change resolution via the optimal audio and video option hangs on restart too. The system is W10 64 with all updates and I have a 1080ti with up to date Nvidia drivers. Steam is up to date and I have verified the cache within Steam. I know this is a recurring problem and I have fixed it before but this time I have tried suggested fixes from the net with no success. Any help welcomed. Thank C.