HBAO leads to visible micro stuttering indoors and makes load times 2-3 times longer.

Patch 1.3.47

Win7 Ultimate 64-bit

i7 3930K

16GB RAM (4x4GB)

Running from Samsung 850 Pro SSD

980 Ti Hybrid (6GB VRAM)

All at stock speeds.

Game running stable, no crashes or freezing.

BTW, what is the requirement for being able to copy-paste on the forums?

HBAO is a fps killer. Expect at least 10 fps drop. You are seeing stuttering cos it falls below your stable fps ...