The stackblitz project that opens when clicking on the "Solid Start" button on the "Getting Started" page is extremely slow to start the dev server and do HMR.
I followed the steps manually, building on the official solid-start stackblitz here, and was able to successfully set up panda and get fast dev server starts and HMR, but adding the parkui preset to the panda config made initial dev server start time ~100s and HMR time ~20s.
I downloaded the project and ran it locally and it was much faster (although strangely the HMR didn't work), so the problem seems to be localized to stackblitz (either because of memory constraints, although that tab said it consumed ~2.4gb of memory, or stackblitz's browser filesystem)