[HELP] Instant Death in Water

For some reason sometimes when people enter water they die pretty much instantly and then when trying to revive while dead under water just keep instantly dying. This happened to me without even dying. I restarted the server and it solved it temporarily. It still happens quite regularly though and I have no idea why. Anyone understand this logic?

Sounds like something with a resource, I think I heard this problem earlier on an esx server

I had something similar and it was [Release] PTTPoliceRadio