Do the separate layouts each have their own event sheet?
Make sure the event sheets are linked (aka included), do this by right clicking the event sheet and choosing (if I remember right) "include" and select other sheet(s) it references.
If that is not the case, your question is easily bug tested by simply removing the timescale and seeing if it functions correctly.
I also believe that timescale only affects things that are using delta time so it "shouldn't be" affecting a menu swap.
Also, once the action to change layouts is reached anything past it in the same event is moot unless the layouts are set as global layouts.