Welcome!
Please help me, my wow had fps drop all time on my brand new laptop, i can run gta V on ultra x3 but still wow works like crap. I dont use much of addons and they take 25 mb at all , anyway when i turned off all of them problem still was real. Sometimes when i just start to play i can sit normaly on 60 fps but when i do alt tab it drops to 30 fps max, i always have mozilla on listening to youtube and sometimes watching memes xD. My disk is not even half full and is always defragmented evry 3 days, i use Kaspersky Antivirus.Im sure he use right graphic card( psyhx checked etc) I even scripted more ram to games.Drivers are always actualized to new version.
Here are specs of my laptop.
Win 10 64 bit
16gb Ram DDR 4
Intel core i7 6700hq 2,60ghz x8
Nvidia Geforce 960m GTX