I'm with Grazie on this one.
Apart from trying doing it in two steps what about changing the order?

Bob.

I got this also in a similar item where I was slowing and panning. How about motion blur? Is it on? How about that super-sampling you can do on the output vid bus?

doing it in seperate stages usually works ok but it ads a generation to the DV...

umm.. suspersampling is usually off unless im doing multipass velocity scales, or intense slow mo's. Motin blur defeats the purpose of the detail im trying to represent (ie a footballer diving for a catch just as an example)

I jsut think the engine falls over itself when its asked to slowmo and pan and crop a track.. thing though is that interpolation is on.. and sometimes, even whn slow mo is ISNT being used, and all ive done was reframe a shot (as in raise or lower the frame vertically or shift it horizontally) i sometimes get this as well..

as for teh glow filter, ive learnt that u have to be REALLY careful with it becusae using it with slowmotion creates pulsating and flickering results. I usually render my slowmoo, then add the glow later..

I can prolly do the same with teh pan crop slowmo, but rendering elements out then reimporting them defeats the purpose of an efficient NLE.. reminds me of how Edius works (render and replace)