Perfect Playback but Choppy Scrubbing

[Srfaye327]

Hey friends,

I'm hoping to get some insight into an issue I'm having. I don't think it's a bug, but a hardware issue - I'm just not sure what. When I launch a project, it initially scrubs perfectly even with intense codecs (I'm grading All-I 4K FX6 SLOG3 footage). Over time, however, it starts to get choppy but ONLY when scrubbing the playhead PAST A CUT onto a new clip. Again, scrubbing is perfect until it passes a cut. Playback is perfect with no dropped frames. The issue gets worse and worse over time as I'm editing to the point where every time I scrub the playhead past a cut it hiccups for a second or two. As you can imagine, this is incredibly annoying and time-wasting when trying to scrub through timelines. Even much lighter EOS R 1080p footage still does it, albeit much faster.

I'm not sure what the bottleneck is. I thought it might be my slow SSD but I recently tried an NVMe SSD that has killer write speeds and, while it was a little bit better, it still ended up slowing down. I also thought maybe it was my computer's RAM (I have an M1 Max MBP with 32GB of RAM). When I close the project, restart the computer, and open the project again it right away scrubs smoothly again. Everything is up to date - both computer and software. I've attached a video for reference.

[Srfaye327]

Here's another video that even better shows what's happening.

[Peru Bob · Accepted solution]

Delete the Media Cache and Media Cache files:
https://community.adobe.com/t5/premiere-pro/faq-how-to-clear-your-media-cache-in-30-seconds-in-premi...

If that doesn't work, try resetting the preferences:
https://community.adobe.com/t5/premiere-pro/faq-how-to-reset-trash-preferences-in-premiere-pro/td-p/...

If that doesn't work, try resetting the Workspaces:
Reset a workspace
Reset the current workspace to return to its original, saved layout of panels.
1. Do one of the following:
• Click the Workspace menu icon and select Reset to Saved Layout.
• Choose Window > Workspace > Reset to Saved Layout.
from here:
https://helpx.adobe.com/premiere-pro/using/workspaces.html

If that doesn't work, try Preferences > Audio Hardware and set Input to None.

If that doesn’t work, try updating or rolling back your graphics driver directly from the video card manufacturer’s site. If NVIDIA, do a clean installation of the latest Studio Driver (NOT the Game Driver)

If that doesn't work, try creating a new project and import the old one into it.

[Srfaye327]

Just wanted to circle back for anyone else who might have this problem and discover this thread! Resetting the preferences seemed to do the trick. I'm kicking myself that I didn't do this earlier as it would've saved a TON of time waiting for the playback to catch up. Thanks Peru Bob!

[Peru Bob]

You're welcome.