Update :

I tried "ping PGMusic.com" -> every 4th package lost
I tried "trace route PGMusic.com"
->
8 * po-1.ce04.mtl-02.ca.leaseweb.net
9 * * *
10 * * *
Packages lost at location above.
ChatGPT explained that this is typical issue at German Telekom routing

I installed Cloudflare Warp -> switched it on -> Full download speed !!! -> 10 MB/s

Crazy !!!! -> Thanks to ChatGPT -> so it is a routing issue related to German Telekom .

I had this never before.

I am wondering if I am the only German guy with this issue ?

BR

Stephan