Recently in the last few days my time capsule had severely slowed down my internet connection. When I reboot i'm getting about 3000Mbits per second download... then within a few mins everything comes to a screeching halt and I get 200-300Mbits per second. I've tried restore... no luck... tried wireless vs hardwire connection... no luck. This is pissing me off and dunno whether I need to make a genius appt or not or if it's just crapping out.

Edit: I know it's the time capsule b/c when I directly plug into the modem it's screaming fast.