I'm sharing a connection with my sister using ICS(Internet connection sharing). The problem is whenever I'm playing some online game like Dota and she loads up her sites like some sale thread or blog with 50-100 pics I'll get huge delays in my game.

I've considered other things like getting a router or switch, what's the best solution? I've heard that routers with QoS are capable of limiting her bandwidth/prioritizing mine but they're pretty expensive :E