Hi, i have the same dsl modem on 250mb telekom tarif with the settings: Dsl modulation type: auto, Annex type: auto, Bit swap: uncheck, Sra: uncheck, Upbo: uncheck, Dt line optimization: check, 35b dslam: check, Vdsl 30a profil: uncheck, On the QOS: disable ( uncheck),  Speedtest 220mbps download, 40mbps upload.

It might be worth checking with your ISP to confirm if Super Vectoring is fully enabled Gold Rate Pakistan on your line. Sometimes, they apply profile limits despite hardware compatibility.

It is like a possible ISP limitation or profile cap coffee pods. Have you checked with Telekom to see if they’re enforcing a speed limit.

It seems like your connection is capped at 125 Mbps, possibly due to the router's settings or limitations from the ISP. Have you tried checking the DSL settings in your router or reaching out to Unlocking the Secrets German Telekom for any service restrictions? Sometimes, firmware updates can also help with performance.

  @HvB81 

So Today it got finally resolved.  yes my ISP had a limitation active, reason for it no idea. Maybe caused by some issue in the past and it never reactivated again. 

Ty for all the answer :))

Router works absolutely fine :D