Even without factoring in SweetFX 3rd party programs can be a problem.
Please try a Clean Boot then try launching the game again.
I was having the same problem for close to a week just recently. BUT! go here and follow the steps. My game is fixed 100% but when you finish following the steps be sure to go back into your msconfig simply by going to your windows search bar and typing msconfig then into the services tab and activate PnkBstrA (punk buster A) If you don't activate PnkBstrA you will be kicked from servers because the server won't be able to contact punkbuster. Try it, it worked for me thank god.
- Thanks to EA_David for this tip
My system specs just for knowledge:
PC Specs:
1x MSI Z97-Gaming 3 Motherboard
1x Intel i7 4790K Quad Core 4Ghz
1x CoolerMaster Nepton 240M Liquid CPU Cooler
1x MSI Radeon R9 390 8GB
1x Corsair Vengeance 8GB (2x4GB) DDR3 LP
1x Corsair CS650M Modular 80 Plus Gold Power Supply
Keyboard:
RΛZΞR Blackwidow Ultimate 2015
Mouse:
RΛZΞR DeathAdder Chroma 2015
Headset:
Astro A40 + mixamp
