I have Bitdefender Total Security 2019 (windows 7 64bit). Lately, I have been having issues with Bitdefender stopping my internet when using Battle.net app. I'm still connected to the internet but my speed is 0.04kbps (normal speed is 3.5 kbps).
My question is, does this happen with Kaspersky as well?
I am thinking about switching to Kaspersky Internet Security (Not Kaspersky Total Security).
Try Comodo Internet Security - it is FREE and very good.
I had problems many years ago with Bitdefender, it did a weird block on my network card, even when it was uninstalled. After that, I never went back to it.