Hi, you could be using any other Browser also they would all interfere. Bandwidth is split between everything that uses it. If want to watch youtube do not download. Save your downloading for the times when reading or walking away for awhile or late at night. Suggest get a IDM, 11 to choose from. Your bandwidth will still be spilt by all programs that use the internet but with a IDM the file will come in faster. https://www.lifewire.com/free-download-managers-4129266 Please let us know if this solved your issue or if need further assistance.