Thanks for reporting in those details. This is quite strange because we have made projects with both MV3D and TurnBasedMovement and we have not run into this issue before. If you would be alright with us looking over your project to figure out what's going on, please send the project in either a compressed zip file or as a link to a repository to our business email (found on our Store Page). Any additional instructions you can provide in the email for how to replicate the bug within your project would be appreciated.
Viewing post in Turn Based Movement - RPG Maker MV/MZ Plugin comments
I'll try to get you those files as soon as I can.
I did do some more testing, and turning the frequency down to 4 helps. I actually thought I;d solved the issue since it seemed to be working great at that slightly lower setting, but it eventually stopped following the path I laid out.
So it might have something to do with how the frequency of movement works since 5 glitches out almost right away and 4 works for quite a while (over 20 moves) before glitching out totally.
I've also gone back and forth between two different versions of mv3d: 8.3.1 and 9.0, but they both have the same issues. I'm using 8.3.1 in my project, by the way.