[GNUz] new Firefox laggy

[Rik Tindall]

Hi All,

Mozilla Firefox has been a snappy, very reliable web browser for the 
past 25 years approx, in my experience.

Version 89 though has suddenly bogged it down, badly.

a. Has anyone else struck this problem?

b. Does anyone know has to speed it up again?

Using a good many Firefox window-frames open at once may be a 
contributing factor, bet it never was before.

Thank you for any advice.

Cheers, Rik

(On Ubuntu-MATE 20.04, webmail via the Chromium-browser snap: ...much 
better!)