Yeah, that doesn't seem like it would cause an issue unless you were streaming high bitrate files off of some other server to the Apple TVs at the same time as trying to watch a video. Given the 10Gbps SFP+ switch though, even that shouldn't really cause an issue unless somewhere in the chain, it's not actually negotiating a 10Gbps link between switches. I do find it odd that it's hardwired through a 10Gbps SFP+ switch but only getting a ~350Mbps connection to the terra. I have seen where SFP+ to ethernet adapters can sometimes have finicky compatibility, at least with my Ubiquiti hardware, but given that the stratos are reporting 1000Mbps links, I don't think that's it. Just curious what kind of speeds are you getting through the speedtest.net app on the Apple TVs?