Hope I'm not to late to help. So i got root with kingroot, (not kingoroot) fast and efficient to be sure but i have real trust issues with..well anybody really, Chinese hackers with backdoor accesses for sure. That said, and not having anything valuable on this brick-to-be the performance gains were pretty substantial. Like day and night. Might be because i only use it on Wi-Fi at home so i was able to can all the telephone crap, oh but i do love pushing uninstall on bloat. Almost makes the frustration of no one knowing how to root the thing worth it. Anyway, here's the kingroot link. Be warned, It will intigrate, and it was still there after a hard reset (i sometimes love canning boat a bit too much) which creeped me out enough to uninstall it just to be sure, and it did.
Xda won't let me post the link. Is actually on this site somewhere or google. just don't do kingoroot by accident. Been there done that