Disappearing waveset

I'm trying to solve the left over problems in my shell before moving on to adding new stuff. One problem is the by now famous waveset and transparancy problem. Now I have something else and I'm not sure it is related.
When moving through the shell, either past the waveset or when swimming in it, it every now and then disappears. If I stop moving it stays away. After a few steps it pops up again.
Is this a know issue with a know solution?
Thnx!
When moving through the shell, either past the waveset or when swimming in it, it every now and then disappears. If I stop moving it stays away. After a few steps it pops up again.
Is this a know issue with a know solution?
Thnx!