[Changing the Email tied to my account.]

How do I go about changing the email tied to my account, I can no longer access the current email tied to this account. Didnt see a option to change it on the account page.

[Low FPS / Lag Issues [MERGED]]

About 2 days ago my game has lowered in frame rates, and has little mini lag spikes. walking around, turning the camera, generally everything is causing these little "skips". tried reseting my computer, deleting cache files, and lowering graphics, nothing is working. The game was running perfectly before.