Hi - I turned on the eero labs local DNS cache this morning but it appears to have made no difference and could have even slowed things down a bit based on using the DIG command in Mac OSX terminal.  Obviously only made the change less than 12 hours ago but what sort of improvement should you see, under what circumstances and does it take a while to build up a local cache?  I have a reasonably fast broadband (around 350mbps download and 40 upload) with Virgin in the Uk in London.