Just in case this helps someone else, this was running extremely slow for me when I installed. I read all the other complaints that I could find and tried every solution with no luck. Finally I figured out my problem. I have my local websites folder mapped to a drive (eg: W:\example.local) and was using that as my default sites path. When I changed that to the location on my C drive it finally sped up. Maybe obvious to people smarter than me, but I didn’t know this would matter.
Note, I actually had to change the default sites path in the settings to get it to install to that location… for some reason if I changed the site location manually when adding a new site, it would still always install to whatever I had set as the default sites path.