I am new to making mods for zombies and today I decided to try my mod with my friend. I found a series of glitches which I failed to find a fix for.
1. The player models seem to go invisible from time to time
2. After being revived(or reviving anyone) the game lags and then the person who was revived becomes invincible to zombies
Can anyone help? I really want to know how to fix these.
P.S. I'm using Harrybo21's perks just in case if it matters.

If you're using harry's perks version 5.1,this is the problem,that pack is having a lot of coop errors