WHY DO ALL EVENT SPEEDS CHANGE AFTER SAVING THEM (v.7)

[waterbeast]

Will post screenshots if necessary.

After adjusting tempos in individual scenes / overlays,
then saving the show file, & Shutting Down the system.

Next show, everything is off
.. speeds are either super draggy, slow / or hyper fast,
way too fast, sometimes even so fast it looks stationary.

1 - Why exactly does this happen

2 - How do I fix it

[Zoltán]

Yes, please upload some screnshots and the composition file you have issues with.
Thanks!

[waterbeast]