@NFtoBC traffic shaping would definitely be a good option. I guess it comes down to cost for a network switch with that capability and how bad they want to control it on their end vs getting a second line and having peace of mind.
The challenge you may run in to is a limitation of the billing system. You won't be able to have 2 residential services active at the same address. If you can designate one as a basement suite then it will go in fine but the system will say there is ...
After a bit of googling it does look like that Asus model does support Multicast which is required for Optik TV to function properly. The one thing you'll need to be aware of is if you have any wireless Optik TV boxes they will need to be reconnected...
That depends on a few factors. If you are on single loop copper (one phone cord in back of modem instead of 2) and it can support 75 without requiring a second line (bonded with 2 phone cords) they can do it as a software order and no tech is needed....
