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Slows down system Rated 1 out of 5 stars
Installed this a number of weeks ago and over the past while have found FF a bit slower - today I found moving between tabs was excruciating. I started up in SAFE mode - changing tabs INSTANT. Then I restarted in full with no add-ons and slowly added them all back and I got lots!! Enabled EverNote - ding ding ding ding ding! Bingo. CRAWLING to change tabs. Out she goes. Currently running 16.02 on the way to version 38 by Dec 25 (don't open until then boyz and goils).This review is for a previous version of the add-on (5.4.1-signed).