How to fix a slow horde webmail when it's connecting to big imap accounts

Hello,

Does your horde + imp webmail get slow when connecting over IMAP to a large account?

I'm still checking for additional fixes, but a quick speedup can be made within imp's /config/conf.php

$conf['server']['sort_limit'] = 100;

Change the sort from 0 to 100 and reevaluate.