Still downloading ROTJ v.2.5 on uTorrent, is there any way to make the .mkv file download faster on WiFi (since there is no internet cable port) or to remove some useless stuff to make the download faster and again, the file smaller (especially audio tracks)
No. It’s a single file. If there are other files included, their sizes are so comparatively minuscule that bothering to not include them would not increase the download time in any appreciable way.