Hey fellow Mages.
I stumbled upon a nice trick about 3 weeks ago when I finally got 4 set t10 on my Mage after not being able to raid on it for a while, due to my guild lacking healers.
So I use the in-game Equipment Manager, and being a Mage I barely have to switch my gear setup, so my PvE gear setup thingy was pretty outdated one day still using t9 2 set (increased crit% from spirit, more regen and more armour and resistance from the Armors). So I equipped the armor set and buffed Molten Armor, and noticed I was wearing T9 so I swapped it for my t10 obviously, with the character page still open I rebuffed Molten Armor and noticed my crit went down, due to the fact I have lost the t9 2 set bonus.
So I was wondering, is this a well known thing? to get a bit more crit % just by switching gear for 2 secs.