new aptv, i have an airport extreme and and express as an expander..if i purchase a hd movie it takes about three - 4 hours to download. Is this normal? also have high speed cable internet. Ive checked the internet several times and it is fast on my hardwired mac. Ran a speed test Ping 82 ms download 12.7 mbps upload 1.12mbps would i be better off plugging my aptv into the express? would this even make a difference? or should these things be hardwired?