Ahh, it’s just for a loop region if you want to pre-render playback.
Then what can I do to make my Video Preview window play things back more smoothly? (I already know how to toggle the quality) I know I have a fine enough machine. I did a ton of reading… Apparently Neat Video is very resource heavy and will slow down playback a lot. It was going to take me six hours to render a six min video because I had used Neat Video’s Denoiser enabled.