Animation pauses intermittently when playing an animation frame from the timeline.

[émericoude]

I'm working on a walking cycle for a video game 2D character. Today I updated photoshop to the most recent version and I started having this bug.

Description:

My animation will pause for a short duration every ~7 frames while playing it from the Timeline's Frame Animation tab. I have 8 frames in my animation, when I play it will stop on a random frame (I cannot seem to have a consistent repro for the first frame that it will pause on) . But every subsequent pause will happen on the previous frame that it paused on. So if it randomly pauses on frame 6, it will pause again on frame 5, then 4, etc... 

Notes:

• This issue is preventing me from viewing my animation smoothly.
• Converting my animation to a video timeline will make it work properly (but that is not part of my workflow).
• The pause is around ~0.5 seconds with 0.1 delay set on all frames.
• This issue occurs at different rates depending on the delay that was set on each frame.
• I was able to reproduce it using the reproduction steps below.
• Photoshop v 21.2.1

Repro Steps:

1. Update Photoshop to the latest version.
2. Launch photoshop.
3. Create an animation by opening the Timeline Window and create an animation frame.
4. Add 7 frames by clicking the Duplicate Selected Frame button.
5. Set each animation to a 0.1 seconds delay. (optional)
6. Create a new layer for each frame.
7. Draw something on each layer using the paint brush. (might be optional)
8. For each frame, hide all but its corresponding layer.
9. Play the animation using the Play Animation button in the timeline.

Result:

The animation stops intermittently every ~7 frames.