When I load Overwatch it disconnects after 2 minutes

When I load Overwatch it disconnects after 2 minutes. This never happened before been playing Overwatch for about 844 hours or more without issues. I can browse the internet but can’t play Overwatch.

I can see my modem will lose it’s connection light every time I try to load overwatch.

I have followed Common Technical Issues and Solutions for the disconnection section

I have followed all the steps that applied and still happens to DC after 2 mins

My specs are
Windows 10 - 64 bit
Nvidia GeForce GTX 780
Core I5 processor
16 GB ram

If tech support can please help that would be much appreciated.

Kind regards.

Sounds like flood protection on your modem is happening when you open Overwatch. Did you see this post, maybe it can help? Common Technical Issues and Solutions