Re: Issues with getting correct download speeds
I have an update on our side. We got a Spectrum Hitron modem replaced with Ubee's at one of customer locations with Spectrum. This location's internet comes over FGT(CPE) to FGT (IPsec consentrator) and even routed through their HQ MPLS circuit to go though their own FW there.
Before the modem swap, download speed was about 16-17Mbps for this 60M/4M circuit. After the swap, download speed is about 60Mbps. So it solved the problem.
Your current situation might be caused by another factor on their network if the circuit is beyond 60M level.