[pvnk]

I use Chrome currently but have also tested with Firefox.

It's happened with FF on a number of occasions with myself. However, It's not Isolated to this board.

I've also experienced It on other websites/webpages In general. In my experience, It tends to occur when I have a lot (80 +) tabs open. No Issues via a single tab though.

That seems like a browser issue. 80+ tabs.