I'm trying to help someone with a large residence set up a network. I'd like to use the Asus AC2400 RT-AC87U router since it is supposed to have great range. Will there be interference from the Comcast modem that has built in wireless ac? Currently, there's another router hooked up and there have been some Internet troubles, and apparently Comcast said there must be interference. I'm wondering if the same will happen with this new router, or if it should be ok to purchase.