Re: Stealth fontification GCs a lot

[Richard Stallman]

    Turning of stealth font locking will result in some drawbacks for the
    folding feature of AUCTeX.  Folding in this context means that certain
    LaTeX constructs or just their markup is hidden.

Since stealth font locking proceeds unpredictably, a feature
that depends on it cannot be reliable.

      In order to get a correct fontification of the
    generated overlays we currently advise users to wait a few seconds
    after opening a LaTeX file before doing this operation in order to let
    stealth font locking fontify the whole buffer.

That's terrible!  If fontification of the whole file is fast enough
that users can stand to wait for it, what you really should do is
force font-locking to completion immediately.