After Effects 26.0: Random frame glitches caused by Time Remapping

I’m on the latest After Effects (26.0) and I’m working on a video edit. I’m using some AI-generated videos as a base and then editing them. A lot of AI videos are slow, so I’m using Time Remapping to speed them up. The comp frame rate matches the footage.

The problem is that when I Time Remap the video, it introduces random glitches on random frames (e.g., 3–5 frames). Normally, when something like this happened before, I could just remove the glitched frame and it was fine. But now it’s uncontrollable: when I change the bit depth, the glitch disappears in some frames but shows up in completely different ones. I’d understand if it was preview-only, but even when I purge the memory and disk cache, it just appears in different places. That’s why I can’t simply remove one or two frames—because the glitch moves.

Frame Blending either shifts the glitches somewhere else or creates other visually weird artifacts. Time Remapping has always worked perfectly for me, so this is really frustrating.