wifi lag

Two issues can cause this. First signal problem. Is your modem connected to a splitter or directly to the wall. If splitter you may have signal issues. Way to test plug coax directly to the Modem reboot modem and if fixes problem you need a tech visit. Other is you may have a bad modem. If its an Xfinity modem simply go to a store ask for a new one. Your modem should be White and an XB7 if from Xfinity. If its black then you have the wrong modem for your speed tier. If the modem is your modem purchased from a store then you may have modem issue which Xfinity cant help you with as its your property.  Give me more info I'll see if I can help further.

@user_a14bea 

Is this with a WiFi connection ? If so, for a test, does a computer / device that is hardwired directly to the router / gateway device with an ethernet cable have the same problem ?

With this test, we are trying to isolate this down to being either a WiFi-only problem or a problem with the general connection to the Comcast system which would of course affect both. It's a good first step of troubleshooting before proceeding any further. 

Thank you for taking the time to reach out to our Community about this issue that you're having @user_a14bea. This is certainly not the experience that we want you to have and we're here to help so that you can enjoy your games and stay connected to your viewers. 

What type of Gateway and or modem/router combination are you using? Have you always had this issue or has it just recently started? We have some great tips at this link https://comca.st/3F9EbY2 that may help as well! 

@user_a14bea 

Were you able to do that test yet ?