I don't think you got my question from the post. What I wanted to know if any similar option is available in utorrent. Suppose I downloaded a file in qbittorrent and completed that about 30% and then deleted that torrent from qbittorrent but not the actual file. The file still remains and I opened that same torrent in utorrent and specified the same directory. Now utorrent will do a file check of existing content because of the hash similarity. I am talking about this checking. In qbittorrent, there is a specific settings to fasten this check and it is called \"outstanding memory when checking torrents\". You can assign your preferred RAM amount to be used to increase the speed of checking existing files for resuming from 30%. Also, qbittorrent applies \".!qB\" extension to incomplete torrents and you can turn that off from the settings as well. uTorrent creates a utorrentpart file of some sort. So if I want to resume a torrent downloaded with utorrent, I gotta delete that \"part\" file that prevents any other apps to resume that torrent. Although there is no app to migrate from utorrent to qbittorrent automatically, there is an app to migrate from utorrent to qbittorrent, same goes from deluge too as I have used these 3 apps so far. As for different settings, yeah, that much is a hassle. For example, with utorrent, to find the settings that tweaks the amount of RAM you can assign to be used when checking torrents is not as obvious as it is in qbittorrent.
as far as I know, every torrent client has a list priority system and it will always recheck any torrent that is either #1 or at top of the list, (can't remember which one though). Thus probably that 250GB one was at the top of the client's list and then move on to the rest even if you download anything new while that job is in progress. As for checking multiple torrents at the same time, you gotta ask the devs about it if a setting exists that you can tweak to get it done. 1e1e36bf2d