Overwatch and Mouse Aren't Working

[striketv]

While trying to play overwatch at the same time, the mouse would randomly pause clicking, and only one of us could shoot at a time. It still allows you to look around, but it forces you to stop shooting for random 3-4 second intervals at a time and it makes the game unplayable.
I've scoured the internet and this website, the only thing I found being a thread about fixing it a while ago:

https://www.forum-en.ibik.ru/viewtopic.php?f=19&t=2722&p=3587&hilit=mouse+overwatch#p3587

I also found another thread about Overwatch and Battlenet, but we've tried using the battlenet launcher instead and to no avail.

https://www.forum-en.ibik.ru/viewtopic.php?f=21&t=2871&p=3797&hilit=mouse+overwatch#p3797

Any suggestions? Thank you !