RFRK Displacement bubbles

[joelnberg]

I have my displacement setup in the hybrido mesh node itself and is working fine. However at some stage in my animation the displacement get these weird bibbles in the height. I have the projection plane well below the surface, with smoothing ect all fine. Ive used 3 different sets of displacement maps as well. A super small height will get rid of it but at some stage the displacement will do what you see in the picture. Any ideas?