Playing Coop, even with no one on the Server with just my Companion and me, i have serious Lags over Minutes, my Character hopping or sliding back and forth in the Sight of my Comrade, temporarily not able to draw a Weapon or do anything.
Sometimes when i perform an Action like drinking from my Canteen, it plays the drinking Animation, but doesn't stop the drinking routine, as i get the message "Cancel Action" still after Minutes, when i want to drink again and the Fill-State of the Canteen or Water-Bottle stays e.g. 40%, as it was before Drinking. When i put something out of my Inventory, it gets doubled on the Outside and Inside and when i displace an other Item inside my inventory, the doubled Item suddenly disappears.
Switching into a Weapons View Zoom Sight or back to normal Sight also lags firmly almost every second or third time.