most of the time the speedup feature only begins working once the ad is already skippable, defeating the purpose. if there is more than one ad, it gets stuck on the first one and doesnt skip through the second one. recently, the extension doesn't work at all for midrolls and in fact renders the video unplayable. i've had to disable it now because if a video has midroll ads i will have to refresh the entire page because the speedup bugs and makes the video window disappear. unfortunate, because i really enjoyed this extension when it worked, it's just that it seems like that is about 3% of the time.