I live in a neighborhood where the only choice is Comcast or Starlink basically. I have the 2Gig plan, I'm a network engineer professionally and have a Fortinet firewall in place with a 10gig throughput, have tested this both through my equipment, and directly hardwired into the modem. I'm getting on average 100-200 mbps down on speed tests from any provider doesn't matter who I have tried 10 different speed test providers just to make sure it wasn't specific routes having an issue. My upstream is running at about 15 up which is half of what it should be. I reasonably expect about 800-900 mbps down on a 2 gig plan simply due to not having a device with a 2.5 or 10 gig ethernet card.
100-200 mbps however is a bit extreme and almost unusable for what I do for work. Really need someones help looking into what appears to be a capacity issue. I went through the auto troubleshooter and modem reboots and your automated system states that they do detect a speed issue, but not a signal issue.