Screen streaming through discord crashes internet for pc.

As stated in the title.... Whenever me or my husband try to stream through screen share, it will run for a few hours before suddenly crashing our internet. At first I thought it was due to me using a capture card or OBS for a while, but it just happened to my husband after streaming for 3 hours for a D&D session. It has caused the internet for just the hosting computer to crash, to the point where we have to hard boot whichever computer was hosting. Even worse, you have to hold the power button down in order to shut it off because it doesn't shut down properly from just regularly telling it to shut off. 
At first I had thought it was just something on my end, from streaming games and such. But his just crashed while streaming a simple PNG image to me for a D&D map, and discord is the only common denominator for this. One of the recent updates we've gotten must have changed something in internal coding that causes a hiccup in the normal processes of our PCs. This is a serious issue.