Testing today went well. Downloaded a couple of shows using the SpaceSaver option. The download for a 30 minute show with the Great/720p option took about 45 minutes to download.
For the one hour shows, with the same settings, one took only about 45 minutes. It was a show I had downloaded yesterday with the TimeSaver setting but deleted the copy this morning. The other show took an hour or a little over (1 hour & 15-20 minutes).
I have Android 8.0 and not experiencing the same issues that @kamy2015 is reporting on their issue #1 but when I first started checking the app out I thought the download wasn't working. After touching the download it would change to pink with the 3 dots as described. The Requesting notification would pop up for a few seconds. Then it appeared nothing was happening. I did the back out then go back in to check a few times then it would start. I didn't realize it was Analyzing beforehand and after that completed then the download began. Plus it wasn't until this afternoon I saw in the notification bar it actually shows the process (and I see it is also mentioned above).
The double list is not limited to after viewing a show within the app after a certain amount of time as I thought. It is also not limited to the main Recording list. Today I have only downloaded but not viewed any shows and the list was double. Also when going into the show list for DC's Legends of Tomorrow, which is the show I've been downloading, it is showing double. I've looked at other show list and those are not doubled.