Yes, but i did have a suppressor. I suppose it was just the wrong kind, perhaps too large of suppressor to give enough backpressure in the gas tube to cycle properly, this is pre your new update. i'll install the update and see how it works out. thanks for the fantastic mod btw!
I am still having some slight issues with the ADS being buggy from 'active' making it worse than default gun stance in aim speed, I tried resetting the bepinex as you directed me previously in a thread elsewhere but it didn't change the way the gun is rotating too hard. essentially all poses when you right click, flail around as they move to center, but it's path is always from middle right of the screen as if ADS causes the PMC hands to jerk from pose back to default pose and ADS from there. i'll try to get a video sometime to show if it doesn't correct itself with the update.
It's the PBS suppressors, they are designed for use with that ammo and will eliminate the extra malfunction chance. Regular suppressors just reduce it. No idea what you're describing with the stances, they can't instantly materialize back at the centre of the screen and instantly ADS. ADS from active aim is going to be slower than if you're not in a stance, it has to move and rotate back vs. already being in the right position. Delete the config from bepinex/configs if your stances are behaving strange.