That would happen if it can't read Questobjectives. Possibly if you are using a client localization that isn't supported. Only enable Questie+Cartographer, see if that works. You probably have some addon modifying the questlog that ruined everything.
My suggestion here is simple: Delete WTF/AccountName/SavedVariables/Questie and WTF/AccountName/Server/Character/SavedVariables/Questie (same for cartographer), then only enable these 2 addons and see what happens.
I think I figured it out. If you scale down your UI too much, that stuff won't show anymore. Use a larger UI scale and see if that does the trick. I guess that has to be it. It's how blizzard treats string frames.
Everything works flawlessly for me now, had a problem with bartender clashing with it at first but managed to resolve that. Thanks for the addon.
Please do not use the version from Master. Instead download the RELEASE. It's linked in the OP:I have HUGE fps drops > 20 lvl ...15 fps in Winterspring..when i turn it off i have 100+ FPS