Hello,

Thank you for the review.
Regarding the poor performance on big pages, this is something that should get better with every new Firefox version. Even now if you enable e10s Multiprocess you should get better performance, see https://wiki.mozilla.org/Electrolysis#Force_Enable

Other than that I'm not sure I can make it much faster, I tried to apply all performance optimization knowledge I have.

Have a nice day,

Best regards,

Juraj Mäsiar