I went to EA support, going to complain about freakin fps drops from 70 to <10 in Battlefield 4. This guy recommended me to download this program, RAMMap, and do something with it, and my FPS increased with 30.
How to
1. Install RAMMap (http://technet.microsoft.com/en-us/sysinternals/ff700229.aspx)
2. Unzip
3. Run RAMMap.exe
4. On the top, click 'Empty'
5. Click 'Empty Standby List'
6. Repeat once every week
If you feel like, you can also do some deeper digging and see what other functions RAMMap features.
Questions? Feedback? ~Ask