Default [Q] Stuttering issues with Note 3 N9005 Kitkat and Nova

I've got issues with Zooper Widget and my Note 3 N9005 Kitkat with Nova Launcher. Zooper Widget causes major stuttering issues while playing games or normal laucher and apps use, not very frequently (each minute or so) but very nasty. As soon as I delete the widget I use (only one with clock/date and meteo infos) the stuttering goes away. If I use other widget (like chronus) I get no issues, but I really like Zooper and all the possibilities it can give to me.
I already tried to do a full reset of my phone.
What can I do?