Same here, updated to the latest build with the bug fix for the UI routing component. I do not notice any differences, a few users said it seemed to be quicker, but are now saying it must have been a placebo.
When returning to SM, the login takes anywhere from a few seconds to upwards of 10 - 12. Users complaining that deleting an email doesnt do anything to the interface, the email stays until you manually refresh or move to another folder then back.
We are sticking this out of course, but it seems to the more updates we do and the longer we are running the more complaints we are receiving.