Optical Flow not working?

[Christoffer Glans]

I'm trying to slow a clip down 50% and use optical flow to get a bit more smooth motion, but when doing so, I cannot render it to make the optical flow work. It only plays the timeline as it "marks" the clip as being able to play without render, but it only stutters when playing. How do I make Optical Flow work on a clip?

 

[Christoffer Glans]

Well, couldn't find a delete button for this thread as I figured it out. Using Render In/Out instead of pressing enter or similar force renders the in/outs.