I have Win 10 on an SSD and it boots fast. I use IE 11, not Edge, and still have some minor issues with the IE browser for my specific needs. My Surface Pro 3 tablet works flawlessly using IE 11 for my specific needs, but not my desktop. So a setting must be off, although I compared the browser settings and that did not solve the problem. So the last thing to try is the default settings in IE to try cure my issue. Otherwise, I use IE 11 on my Win XP server or Tablet to get by for now.
I had terrible browser issues on 10, FF IE... even chrome...