WOW is the only game I play
I tried updating drivers and it said all up to date. If it was just either my lap top or my desk top I could understand something being wrong, but both? My lap top is a little over a year old and my desk top is only 2 yrs old. I'm just stumped.
How did you update drivers? Though Windows or did you go to the vendor's site and check there? For laptop you want to go to the laptop vendor's support, desktop OK to go to the video card makers web site.
I had this same issue when my wife re-subscribed and got a new patch, but all the issues went away after the patch fully finished.
You may want to check Blizzard support forums.