Please note: for network troubleshooting purposes, you should contact your ISP for the most accurate trouble-shooting.
Nevertheless, I would advise you to try a few simple steps:
• To best access The Elder Scrolls Online, I would recommend configuring your router to open the following outbound ports:
•
o TCP / UDP Ports 24100 through 24131
o TCP / UDP Ports 24500 through 24507
o TCP / UDP Ports 49100 through 54000
• Update the firmware of your router (it is always a good step to take, as it prevents that an outdated firmware interferes on your connection)
• Try to put your modem/router far from all electrical devices and do not coil up any excess signal or power cables (to eliminate possible interference problems).
If the above does not work, you can also flush your DNS, which should improve your connection:
Windows 7:
• Click on the Start button
• Type cmd in the Start Menu
• Right-click on Command Prompt and select Run as Administrator
• Type "ipconfig /flushdns" and hit enter
• If it was successful, you will see the message "Windows IP configuration successfully flushed the DNS Resolver Cache."
• Power cycle the router to clear the cache so that it doesn't store the bad route
Should the upper mentioned steps not resolve the issue, running a tracert command to check in which step of the flow are you getting a spike (or more) would be advisable.
I would also advise you to run the tracert with and without an active firewall and antivirus, as it will improve your chances of determining the exact spike(s).
How to generate a traceroute:
Microsoft Windows
• Click Start and type CMD in the search field.
• Right-click on CMD.exe and select Run as Administrator.
• Type tracert xxx.xxx.xxx.xxx ---> c:\tracert.txt and press Enter. Replace the x's with the appropriate server address.
• Allow several minutes for the trace route to complete.
• A file will be created inside your C: drive called tracert.txt that contains your trace route information.
• Type exit and press Enter to close the command window.
Please do let me know if any of these steps work
I won't go into my epic story - but last year I was having strange problems with PathOfExile with disconnects and rubber banding. Turns out after about several visits from comcast that it was a bad amplifier (and other stuff) on the light pole outside down the street. One then to check is start looking at your modem logs - 192.168.100.1 - and if you have odd looking errors/specifically timeouts associated with your problems. I was seeing power fluctuations and T3/T4 timeouts. Of course it might be something else entirely - but its time to get familar with your modem.
If you think it a Comcast issue - take good notes about what they do each time because as Ghod as my witness there internal communication is cluster.
Good point on the modem issue - 192.168.100.1 is what my modem has always been with comcast, but I have heard of others. But he needs to eliminate ISP issues and one place to start is "getting to know" the modem.I should note, it won't always be 192.168.100.1. The Motorola Surfboard modems do use that one though. I have a SB6141 (purchased myself, doesn't belong to my ISP) and it uses that.
Also, with ANY ISP, you are going to have to get up to the third level of support before you will find someone that has any knowledge about networking and how things work. The front line techs just follow scripts, and anyone who is a front-line tech that has any amount of knowledge won't be for long (they will grab them for a higher position). I know, because I used to be a level 3 tech for Verizon DSL.