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Xfinity Internet Has Terrible Slow Upload Speed - When Dec 17, 2019 DNS Performance - Compare the speed and uptime of "Raw Performance" is the speed when querying each nameserver directly "Resolver Simulation" simulates the algorithm of public DNS resolvers and shows the performance from the resolver's point of view "Uptime" shows the real uptime of DNS provider. A provider is marked as down only if all nameservers go down at the same time.

Speed test on CM600 If anybody in the community has a CM600 and a connection with speeds higher than 600 Mbps can you please post speed test results? I'm confident this modem can handle speeds approaching it's rated limit of 960 Mbps but so far I'm only reaching around 550 Mbps even when directly connected to the modem.

Network Test (Upload Speed) IMPORTANT: While testing, you have to be connected to the same internet connection that your broadcasting device will be using. Starting a broadcast with the test still running could seriously affect stream quality because of the high bandwidth usage during testing. Internet Speed Test: Check Upload, Download, & Ping Speeds

The BT performance test is giving test results of 3.52 Mbps Download and 0.26 Mbps Upload. The further diagnostics give an IP profile for the Downstream of 3.64 Mbps and for Upstream 0.83 Mbps. The download speed may be improved slightly if the noise margin were reduced but my main concern is the low upload speed.

3. Let the speed of a boat in still water be u km/hr and the speed of the stream be v km/hr, then Speed downstream = (u + v) km/hr Speed upstream = (u - v) km/hr. Slow internet or intermittent connection drops – Motorola