software

I have a 2015 laptop (4710HQ / GTX 850M)

what’s the best lightweight web browser to run alongside a AAA game? I’m trying out Vivaldi which seems to be using less memory than Firefox, it’s about 500mb typically and 1.5gb right now with 15 tabs open. My fans aren’t screaming like with Firefox. The use case for this is that I have an external monitor and want to fly IL-2 computer airplanes on one screen while looking at flight plans or notes on another.

Should I just use Notepad/Paint as my flight aids instead?