Hi @clay,
thanks for taking the time to investigate this issue. I thought I’d chime in as I’m seeing very(!) slow performance with Local as well. System is a top-specced Dell XPS 9560 with Windows 10. Local is on version 2.1.1.
With ‘Faster Docker Volumes’ enabled and ‘XDebug’ disabled Local runs noticeably faster — but is still slow. A page refresh takes around 3 seconds or so (fresh install, no fancy scripts or massive content). Before, it would easily take 15 seconds AND -weirdly enough- make my browser unusable when opening other websites. They would either time out or give other errors.
I like Local. I like the no-fuss setup, the UI, and being able to easily switch the server config and share links. However, with the current performance penalty it’s really only barely usable for development, where waiting 3 seconds for a refresh quickly adds up.
PS: I’ve now changed DB_HOST in wp-config to ‘127.0.0.1’ and am not quite sure whether I can see an improvement. Maybe 0.1s faster, but that could be a placebo 
PPS: I’ve now set the windows power plan to ‘high performance’ instead of ‘balanced’ as per recommendation somewhere in the forum. This seems to improve the situation, I’m now at slightly over 2 seconds for a reload.
Regards,
R