Firefox slow and laggy, esp. typing online ?

[linux guy <linuxguy123@xxxxxxxxx>]

Anyone else finding Firefox to be very slow and laggy ?  Typing text into a webpage has lags of up to several seconds ?

Is this a Linux/KDE issue or a Firefox issue ?

Thanks !

Fedora 33 Workstation, fully up to date.

KDE Plasma desktop

AMD 3600X, 64GB RAM @ 3600 MHz, NVME SSD

Internet connection is 80 Mb/s download, 10 Mb/s upload.

$ uname -a

Linux bigboy 5.10.9-201.fc33.x86_64 #1 SMP Wed Jan 20 16:56:23 UTC 2021 x86_64 x86_64 x86_64 GNU
/Linux

$ dnf list firefox
Last metadata expiration check: 0:00:12 ago on Mon 25 Jan 2021 02:49:09 PM MST.
Installed Packages
firefox.x86_64                              84.0.2-1.fc33

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