MeBeJedi said:

Davnes007 said:

I have that issue on occasion, and all I do is trim off 1 frame from the end of the clip that's causing the problem.

...Something else to consider with Vegas is that certain effects can appear or disappear depending on the level of detail you are using to watch the timeline (Draft/Preview/Good/Best).

...I would sometimes render out fast action segments in Preview quality...

I put these segments back into the timeline, and then rendered out the whole video, including those segments, in Good quality...

I think you might be confused.

Although things can look different/weird depending on how low the preview quality is set at, it has nothing to do with the quality of the rendered video.