Speed - Stuck on Slow Motion

[Elusien]

Have a look at this thread and the other thread I point to:

My finished video had parts that were choppy, this has never happened before

“Choppiness” and “lag” while in the source player is expected if you are using a lot of filters, or few heavy-duty ones. It can be alleviated if you switch off the option “Realtime (frame dropping)”, but of course it then doesn’t play in real-time. You could also use the technique described here:

You could also try preview scaling.