Have you tried turning hardware acceleration off on firefox?
Also try the firefox long term servicing branch, that might work.
You knew I was gonna say it but that amount of RAM is so small you're going to be really pushing it trying to display webpages etc. These days a simple flash ad can suck up that amount. Try disabling all active content etc etc.
I have a 3 year old (very budget) Dell with [censored] Intel Celeron / 4GB RAM and even that struggles with websites with lots of flash and active content.
ZeN Fibre Unlimited 2
Edited by Pipexer (Sun 03-Apr-16 15:14:35)