Getting 14,15mbps on 25mbps package

I upgraded from 15mbps to 25mbps and im using ptcl vdsl.
The download speed that I get via speedtest is about 15mbps while the upload is 12mbps(which is about how much im suppose to get on 25mbps). But the download is way low.
Could it be due to old/obsolete copper wire? Or there is a problem with settings at exchange?

Check speedtest on PTCL’s own servers.

yes these are ptcls server speeds

I had similar experience after I upgraded many years back. PTCL had not changed limit settings at their Exchange. Called PTCL to check that Exchange settings match my subscribed package and then they fixed issue.

Call PTCL complaint and tell them to reset/update your port settings.