I would like to request this page to be stickied. It is a great resource and people often come to this forum who do not understand how these concepts work. Often this leads to long threads about people complaining that Anet is doing nothing when in fact Anet can’t do anything in most cases such as with ISP issues. This won’t fix posters who are dead set on remaining ignorant on the topic and only point the finger at Anet while refusing to understand how things work. But I think who ever created this page did a good job and it should be highlighted here.
Anyone who is having these issues I encourage you to check it out. It has links to other pages that show you how to run tests to determine issues like packet loss.