Split screen unusual lag (performance)

Update- Just tried playing tonight and using the crafting menu does not reduce lag.

I found out that sleeping on a fur roll will eliminate the lag, I did not try it with a tent, but I imagine that it would have the same effect. 

I don't know how to describe it, but it feels like some sort of memory leak that has to do with the character animations. Each time that the character is in a fixed position (sleeping, examining skin gift, loading in the caves), the lag completely goes away for the other person. 

Just found out that using the Mighty Gym as Wolfgang will eliminate the performance lag as well. 

Found another instance that fixes the lag issue- When one player is frozen (ice hound attack, or by the Klaus' ice deer), the lag will temporarily stop for as long as the player is frozen.