My FPS is significantly lower with Carb Maps loaded (30-40 lower). It is especially bad in Dalaran and the new zones. Are there any settings I can adjust to help? I've limited the database quests to just 101-110 and played with a variety of other settings with no luck. Also I've tested with no other addons loaded.

Yep, FPS is lower then in 7.2.5, i think Blizz changed again something with events and thats the problem.

i just noticed that fps drop dissapear if you mouse over carb mini map (at least on my pc when my mouse cursor was over carb minimised map game stopped stuttering when i was moving)
ed. I did some tests and here my findings.:
1: minimised map open, aggroed some mobs running with them for about 30 sec - fps around 100
2: minimised map open, aggroed some mobs and tried to open full map - map not opening and cause fps drop to around 70 and not going back to normal even after loosing aggro. Need reload to go back to normal.
i think that can be linked to issue i've opened about stack overflow

@qlesz yup thats becouse then some of events are not fired... i thought i did fix for this some time ago, will have to check this...

After todays updates from Blizz my FPS in WOW are better. Can any one confirm this?

Should be better after commits i did.

Seems to be a bit better