Don't know if this is a 'Beta 5' issue or not.
Reflections of 'muzzle-blast' on water stay around like a ghost image.
Tested stock weapons and model pack 5. Model pk. 5 seems not as bad for this 'effect'(?)but stock shows it more-so.
Set-up: 2 'rooms' a 7x7 and a 9x9 just above it.
the water is the 7x7 room. Stand at pool edge,turn light down (< key) and fire across the pool. At first I thought it was only the stock weapons,but model pk. 5 does it also under select circumstances too.With pk.5 weapons it is when you are on stairs almost out from water and fire aiming almost straight down.The good news is I haven't seen the 'effect' from explosions.
FPSC beta 5, win7, Nvidia 460 (latest drivers)
Well getting it to boot up...heh.