Have some progressive footage from a RED camera, that was shot at a higher framerate. I wanted to slow it down even further, so I used the basic twixtor at 30%.

The footage has an individual who brings their arm across the frame pretty quickly, the original footage is smooth as silk but with the twixtor on, the arm becomes stuttery.

Any setting I can change to eliminate/reduce the stutter? Perhaps using the advanced version of Twixtor and some of its settings?

Is it not possible to adjust settings accordingly, and preview-render the footage to see how it looks like?