ON PC, have played since Sept 9th. While there were some crashes to desktop on launch day and maybe once or twice after, ever since I haven't had disconnects or crash to desk until Sept 20th. I've tried turning off crossplay, and I don't have a Pros account. I'm not facing this issue in other games, and ping tests to 8.8.8.8 show no interruptions. 

Now I can go 20-30 minutes into a Operations mission, and then disconnect, I'm able to re-join friends but I'll disconnect at some point, usually with error code: 121

Any suggestions are appreciated. 

This is also happening in eternal war.

The issue appears to be something recent with my Ethernet over powerline as Helldivers 2 also started having this issue and it was gone when I switched to Wifi.