I think I found a win 10 related bug, tested on two machines and one win 8 machine.when you publish this file. you will get the issue that the timeline stops working.
what you do: - create 2 slides both with mp4 video on it - place a textfield with a wipe animation in both slides - publish the file - in win 10 + google chrome the second slide won't play the time line properly, only what is immediately at the start of the time line will play - this is tested to work fine in win 8
- work around methods 1 - remove the wipe animations
alternative work around(this may be a hint to where the issue lies) 2 - place a empty 0.5 second slide in-between the two slides
I have attached the file you will have to publish it