Wither's Skull attack crashes game.

Basically, i play on a skyblock server - completely normal plugins, mcmmo, etc, nothing that can change the behavior of monsters. The issue I have is that whenever I try to fight the Wither, I crash the moment it shoots its Wither Skull attack. Nobody else but me seems to have this issue, but its really annoying cause i cant get this beast slain to get my nether star due to the fact I keep crashing. When I crash, there are no details of the crash, rather, just the logs of what happened before (Ie. what I typed in the chatbox, or what the server said, etc) If i battle the wither from very far away, so far that it wont attack, I can kill it, but its really difficult. This is in Minecraft 1.10.2, the server has not yet updated to 1.11