Is interleaving on? If it is, don't mess with the connection and you can expect another few Mbps in 2-3 days
Kindness isn't going to cure the world of all its awfulness but it's a good place to begin. Daisy Ridley.
My broadband basic info/help site - www.robertos.me.uk.
Domains, site and mail hosting - Tsohost
Connection - AAISP Home::1 80/20. Sync 65273/13554Kbps @ 600m. BQMs - IPv4