FireFox screwed up !

this was a five star app; since the last (Jan.11/2016) upgrade it is sssssllloooooow i.e. it hangs up; if it works at all. I expect more from Mozzila.
Going to delete FireFox at least for now - maybe go back to Chrome or....?
sorry - it had to be said
Impatient Searcher

Sparky IV about Firefox: Private, Safe Browser, v1.4