Bazı arkadaşlarda olmamış bende de olmadı gittim yabancı kaynaktan buldum çözüldü arayan arkadaşlar bunu da denesinler.
I finally managed to fix it, at least for me... Was getting 7-9 MB/s and ı am now getting 33-40 MB/s. The Windows Auto-tuning level was disabled.
Pause all downloads and close the Xbox App.
Here is what fixed it:
1. open PowerShell as administrator.
2. enter this command -> netsh interface tcp show global.
3. for me, the "receive window Auto-tuning level" was set to disabled.
4. to enable it, enter this command -> netsh int tcp set global autotuninglevel = normal.
5. you can enter the command at step 2 to validate that the Auto-tuning is set to "normal"
Launch the Xbox App and start the download again. You should see improved download Speed. I hope that this helps!