Weird loopout bug - anyone else able to reproduce this?

I've tested in several versions from 2023, up to AE beta.

loopout("continue") creates inconsistent noisy speed, and doesn't continue at a consistent speed. Wtf. I swear I've used this before without problems?!

I posted a video on Reddit: https://www.reddit.com/r/AfterEffects/comments/1fw9tmr/weird_loopout_bug_anyone_else_able_to_reproduce/