Rendered speed is wrong

I took a clip and sliced into small pieces to let me go from 1.00x playback to 3.00x playback. To check how it looks, I exported it with the losses H.264 option. I want to include this clip in the overall project.

The exported clip, in the original, 1.00x section is playing back at something obviously less than 1.00x. The rampup to 3.00x happens but the end result isn’t as “speedy” as it was in the Shotcut.

First question: what’s the least lossy way to export a project, so Iit can be used in another project?

Do playback speed changes remain in exported files? Is there a trick to preserving the playback speed changes?

I have no idea what was happening, but the problem went away. Thread closed.