Please check my modem and reprovision if necessary. We recently upgraded to 200 Mbps service, but we are only achieving about half of that around 94 Mbps using Xfinity speed test.
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The 5341J is marginal for that speed. It's only an 8-channel device. Even though the packaging says it's good to 343Mbit, that assumes 100% usage of all 8 channels. Realistically, I wouldn't it use it much past 100-150Mbit. Consider getting a newer modem. New ones are either 32-channel, or DOCSIS 3.1 which can use a new method that allows up to 1Gbit+ speeds.
@ComcastJK please check why my service is showing currently at 100 Mbps on my device page when we have subscribed to 200 Mbps service. My modem shows it is supported by Comcast up to the 200 Mbps speeds. Do I need to upgrade my modem to achieve the 200 Mbps even though it says it is supported?
That modem is capable of 200. I used to get it all day long when I had one. It probably hasn't received the updated boot / configuration file. Try power-cycling it to see if it will pull the new one. If not, you'll need a rep to correctly provision it for you. Good luck !