Raspberry Pi 4 Model B
LibreELEC (official): 9.2.1 (RPi4.arm)
1. I start a wget download. It works fine.
2. At some point I start a playback from the Kore android app (or from VLC using UPnP/DLNA).
The result is that neither works. The download stops/somewhat continues, the video freezes. I can't navigate in the video (seeking, jumping, ...). I can't play videos from samba as well after this.
Samba alone usually doesn't break the download, only UPnP/DLNA does.
If I only watch a video via UPnp/DLNA (and not downloading), it works perfectly. I can navigate in the video without a problem.
Also, it seems it needs some time to be stable again.
It seems I've just solved the problem while writing this. I plugged my external SSD (ADATA SD600) into the USB 2 port instead of the USB 3. It works.
I tried with USB 3 again, the problem came back.