Originally Posted by
canadiancow
I have multiple computers.
The current one is:
I have not experienced any issues as you describe.
In the 2 computers I tried (1 has a faster CPU than yours and 1 has a slower), both did not result a high memory and CPU consumption. However, they are both desktop PCs running latest Firefox (in private mode) on Windows 10.
You have your charger plugged in?