Have you seen this tutorial - http://support.apple.com/kb/HT4199

[quote]I get time out issues on many websites. [/quote] Please describe exactly this issues? Do you have problem with internet access in all devices in same time? What kind of DNS addresses do you...

Firstly check power supply (AC) and his performance. You can use new power supply 12V/1A or 1,5A

In my opinion better solution for 1080p HD and multimedia is network drive (NAS)

Have you seen? http://www.tp-link.com/en/article/?faqid=194 or install Gargoyle alternative firmware on linux.

Cat5e can link units in speed 1Gbps