Since we do not own any of the videos, there isn't much we can do to improve your watching experience, but here are some tips that may help you with your problem.
Use a different version. The loading speed varies from a version to another, so find the one that works fine for you.
For the best experience we recommend using the Firefox Browser, some versions just won't work on some browsers but most of them work fine with Firefox and maybe you will even use it as your main browser.
Since we do not have any ads, there is no need for Adblock. Disabling it can also solve some of your problems, some versions may not play if your browser has Adblock enabled.