KEBAB ELIMINATOR

I have problems with FPS drop. I have done everything associated with fps increasing (clean-up junk files, set commands for Arma 3, overclock my CPU, put even the lowest graphics, set priority to high) but my FPS on wasteland haven't changed and I still keep getting 30-50 FPS. Once I had 60-80 FPS on a different wasteland server. I have: CPU: Intel i7 4470 (overclocked to 3.9 GHz) GPU: Nvidia GeForce GTX 760 RAM: 8GB OS: 8.1 x64 If anyone can help I highly appreciate it!