Board Thread:Support Requests - Getting Technical/@comment-24524462-20160303174015/@comment-168424-20160303215516

Try another browser. Other users have reported different problems with Wikia and Chrome.

Your machine should be plenty fast. If you want to continue to experiment see how the performance works with only one tab with only the Visual editor open. You may want to see if performance varies depending on which wiki you're trying to edit or which namespace you're in.