If I make lots of forum posts, or open lots of websites, it seems to trigger a drop in connection for a minute or two at random intervals spanning 5 minutes - hour or so. But I can game for hours without issue? Why is using the browser heavily triggering these disconnects but not intense network games?
I actually had this issue with Virgin, I use powerline adapters. But I'm sure I had this when direct connected to the router too.
The problem is your browser, not your internet connection.
What makes you think there is a drop in connection/disconnect - is anything showing in any log?
Which browser are you using?
Having lots of browser tabs open will slow both your browser and device giving the impression of disconnection.