Yeah. Too bad that the comb filter is not adjustable because I imagine that turning the adaptivity to favor 2d a little more than 3d would probably eliminate this entirely.
LD-decode has a good 2d filter already implemented that could be used though. To be honest I'm not sure PAL really needs 3D comb filtering because the output from LD-Decode looks as good or better than this.
Are there any PAL compatible 3DCF's in avisynth? Tcomb does not work with PAL.