Hey everyone,
I know I’m resurrecting an ancient topic here but I have some great news regarding performance. 
We recently released the 
Local Lightning Public Beta which no longer utilizes virtualization. Since virtualization isn’t required, the PHP processes and web server can directly load your site files without the overhead of going through a process like Faster Docker Volumes.
It’s safe to say that everyone in this thread should see much better site performance with Lightning. 
Be sure to give it a test drive and let us know how it works for you! Best of all, you can use it side-by-side with Local by Flywheel.