Time Warner Cable Woes

Are there any tips and tricks against TWC?  They are the only ISP in my area. I can fix the YouTube throttling with blocking the IPs, but how can I do that on my Nexus 7 and RAZR M as well?  I tried doing it through my router, but it seems I cannot. It is an Arris router. 

Also, when mybrother is on his Xbox I notice a speed decrease, which I never on noticed on AT&T U-Verse. Both were around the same speeds. 16 Mbps down, 1.5-2 Mbps up.