[Jonathan Siler]

I would recommend using field render in your render settings dialog. That in combination with your blur should help the problem alot. If you’re using a BMD Decklink, lower field first is the way to go, as with DV also.

[Jonathan Siler]

yes. In this instance, it does not affect the memory available to the RAM Preview. In every other circumstance that option works. It is almost as if the OS or the program does not want to let go of the memory being used after the RAM Preview.