Slowdown after installing engines

Hi all!

So, I just added the engines plugin to a large app (aprox 20-30
plugins already installed) so that I could write the first engine in
that app.

It’s working great, but there was a pretty major performance hit. it
appears to only be in development mode, but I’d really like to get rid
of it if possible.

Is there a way to tell the engines plugin to ignore the plugins that
aren’t engines?

I have hundreds of lines in every request saying things like:

checking plugin ‘XXX’ for ‘YYY_controller’

Any thoughts?