Hello

> I've been having good experiences with this firefox fork.
> Recently it takes seconds for typing to appear in a text
> input widget. Also takes longer (showing spinner) to
> render pages. I've tried clearing all the caches,
> and checked for questionable extensions and plugins.

This information may not help you directly, but at some point
I also saw this problem on a normal firefox build. So it
might be version dependent, and your waterfox could a different
vintage to the firefox build.

Other things to try is to go to about:config and disable
the type ahead features, in particular the search autocompletion
logic ?

regards

marc