@terminallyTestified Hmm. To be honest there’s little I can do to check for more issues through the forum. If you’re able please send us a link to your file where the problem can be experienced.
You can use wetransfer.com and follow this guide to use their anonymous link option (will delete itself in 1 week) https://wetransfer.zendesk.com/hc/en-us/articles/115004254743-How-do-I-send-a-link-transfer-
I also forgot to ask, does this happen when you export the movie as well? or only during the editor playback?
If it happens only during the editor playback, it could be due to how Pencil2D stores frames on the computer memory.
There’s a limit to how many frames can be stored at any given time, and once the playback goes past the default number it slows down a bit. After a few plays it should work fine again though.
Just in case please try going to Edit > Preferences > General Tab > Advanced Section > Cached Frame Number and try to put a bigger number like 512 (default is 200)
Note that this will require to to have at least 4 gygabytes of RAM, as Pencil2D will try to hold more frames in memory so the playback is smoother. If this improves the playback “lag” in that part you mention. Let us know. If not, please default the number to 200 and let us know as well.