https://youtu.be/HxYPS4l3ADc
Can be reproed with all hand-held launchers; can not be reproed with Vorona (launch_Vorona_base_F) and all vehicle weapons (e.g. SPG-9)
Seems to problem in class GunParticles for hand-held launchers because Vorona does not have GunParticles in configuration
upd: for test I set fast shooting to AI unit via scripts, seems particles works randomly in this case, see this video https://youtu.be/0ODkMmmLLRI