Good news and bad news. The good news is that I fixed the issue. The bad news is that it took a fresh install of my OS to do it. Symptoms: Game begins to lag and then freezes, but will not crash/close until it is force quit. Log info: In Vanilla or modded gameplay, after 5-15 min a large amount of the following warnings are seen. WARNING: SuppressCache::Trace called with huge input. Function exited to prevent program stall inside. After force quit "0x00000001 – UNABLE_TO_INIT_DXGI" is seen Troubleshooting: All drivers, Direct X, and Arma were reinstalled, none of which fixed the issues. I tried various things I found online such as lowering sound quality but it didn't work. DayZ (same engine) ran for hours without any issues so I ruled out hardware issues. Fix: Moved Arma profiles and other files I wanted to keep to my D: drive and did a fresh install of Windows on my SSD. Reinstalled drivers and Arma was working like a champ.