I've actually noticed it in the last few releases but cant say for certain what version it started in. I am on Windows 1195 as well.
My wife's PC, with lesser hardware, doesn't do it and our cache/temp directory settings are similar (dedicated SSD drive).
I notice that the PI process stays running for a bit after closing and you cant reopen it until that one clears.
I also noticed that if i manually clear the cache/temp directory, it loads a bit faster but not as fast as my wife's.
So far, I've just chalked it up to be slow java startup times, and it may have started after a java update rather than a PI update but i cant say for certain.
-Chris