High RTT? Super Laggy?

I've had major lag playing Maplestory and PopTag. My internet browsing is completely normal. In Poptag, my RTT goes up to 7s -_- Why am I so laggy and how do I fix this? It used to be completely fine, and my RTT would be around 0.05..

EDIT: Scratch that. My internet also seems slow -_- YouTube loads slow..