I now run at 3600 RAM, 1800 IF, CL16 and custom sub timings. I needed to use DRAMCalc to find better timings and custom calculate the tRFC to fix it. I had a crashing problem develop over time that indeed turned out to be me pushing the IF to 1866 to match my 3733 RAM. No one else is reporting a problem on Steam about this issue either, so it's either a PhysX thing or RAM OC settings a very strong possibility. My Battlefield games do not crash at al, nor do any title I own. I can download Beaming but the fact that you say some Battlefield crashes happen tells the story. It's coded into it and primarily Nvidia's thing but it is open source meaning older AMD cards used it.