Grain not working in v3.0.2 with nVidia 526.47

I’ve been trying to add grain for a more natural look to the videos, however when I enable the option nothing happens. Neither the preview nor the exported video have grain in them. I’ve tried various values, 0,1…10…20. None of them work.
I’ve also tried various export codecs: 264, 265, 422 HQ.
Im using: Proteus - FineTune / Enhance with Manual parameters.

Can anyone try grain for me please ? Use version v3.0.2 of the software and tell me what GPU driver you’re using and did it work or not ?

Grain function in 3.0.3 is not working properly. Grain is inserted every 4-5 frames.