[BUG]download speed low and can't download subscriptions from big channel

[angelsky11]

Describe the bug

1. I have a 1G network, in my local network, i can get 30mb/s download speed on my PC or Android phone with other yt-dlp and aria2c app(tested on CubuYoutubeDownloader and Seal), but with this app, i can only get 1~3mb/s speed, is any way to slove this issue?
2. Can't download from subscriptions, for example https://www.youtube.com/@laogao , this channel have 400+ videos, fail to download any video after add it to the app, and below is the log file
   error.log

Environment
Installation details:
Synology Nas
Installed version: v4.3.2
Installation type: docker
Docker tag: nightly
Commit hash: 4dc8994
Build date: 2023-12-07

[Lreaper]

Same issue here with docker arm64

[RobustMarker]

Not sure if this will help much but from my understanding so far is that you have to let it run for a while, as in the logs it looks like you force stopped the downloads. Im also having the same issue with downloading stuff from another large channel (linustechtips), but it is inconsistent. Some large channels work, others not so im also lost.