I haven't changed anything on my comp in a while with exception to a regular windows update, but after the recent 1.32 ARMA3 update, I have very bad stuttering when playing a couple user created missions. It runs perfectly smooth except when helicopters strafe or rocket the area near me. I know that the smoke and explosions are graphics intensive but it never stuttered before. I have a pretty high end machine and I've never had so much as a single slowdown, even on Ultra everything, with upwards of 100 men, tanks, heli's in the mission. PC Specs below:
Processor: Intel Core i7 Extreme Edition 3970X 3.5GHz (Six-Core) (Extreme Performance)
Motherboard: ASUS Rampage IV Extreme X79 (Intel X79 Chipset) (Features USB 3.0 and SATA 6Gb/s)
System Memory: 16GB DDR3 2400MHz Corsair Dominator Platinum DHX (Extreme-Performance)
Power Supply: 1200W Corsair Pro Gold Series (CMPSU-1200AX) (Dual/Triple/Quad SLI Compatible)
Hard Drive Set 1: Operating System: 1x (500GB Samsung Solid State (SATA 6Gbps)
Hard Drive Set 2: Multimedia\Data: 1x (2TB Western Digital (7200 RPM) (Model: Black Edition) (SATA 6Gbps)
Video Card(s): 2x SLI Dual (NVIDIA GeForce GTX 680 4GB (PhysX) (Classified Overclocked EVGA)
Sound Card: Creative Labs X-Fi Titanium HD 24-bit 96KHz 7.1
Extreme Cooling: H20: Stage 6: Sub-Zero LCS Dual Loop: CPU & Dual SLI/CrossFire Video Cards & Chipset
H20 Tube Color: Blue Tubing with High-Performance Fluid (UV Lighting Reactive)