about:tor very slow to load

On a slow Linux machine, I notice that about:tor is extremely slow to load. The browser window appears, but the page only appears after 20 or 30 seconds. On a faster machine (multicore) the page appears quickly. This might be related to #26381 (moved), but I think it's more likely a separate issue.

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information