[abond]

Hello!
Why does the download speed from YouTube with jDownloader not exceed 100-300 Kb/s, although my bandwidth of the Internet channel from the provider allows me to download at speeds up to 50-60 Mbit/s.

I tried to download the same file with other Programs - for some reason the speed when downloading the same file jumped in the range from 2 to 6 Mb/s (in one program - it was an average of 2-4 Mb/s, in other program was 4-6 Mb/s, but with jDownloader - only maximum 100-250 Kb/s). As a result, the file was downloaded many times faster with other programs.

What could be the reason?

...

Some later I tried to download the same file with different codec settings in jDownloader, results was :
[30fps, 720p, MP4-Video, AAC-audio] - downloading speed is 5-6 Mb/s (!!);
[25fps, 720p, MP4-Video, AAC-audio] - downloading speed only 150-300KB/s;
[25fps, 720p, MKV-Video, AAC-audio] - downloading speed only 100-150KB/s);
[25fps, 480p, MP4-Video, AAC-audio] - downloading speed only 100-200KB/s;
[25fps, 480p, MKV-Video, AAC-audio] - downloading speed only 100-200KB/s
....

Why download speed is so much different ?
And why high speed is achieved only when downloading files with settings - [30fps, 720p, MP4-Video Codec] in jDownloader?
Why in other programs there is no such difference in speed when downloading videos with different resolutions from YouTube?

PS
Thank you in advance