I wonder if this is caused by running everything over the same bus.<p>Graphics is internally PCIe, which is what thunderbolt basically is, which is also routed through USB-C ports. And WiFi is probably an internal USB device. They probably don't have a separate controller for each port, so the throughput is limited. I wouldn't think video capture saturates the bandwidth already, but it probably messes with the timing enough that the WiFi driver gets confused.<p>If it is really that, and not a mere software problem, then it should also show up when e.g. mixing external monitors and USB devices, or in other combinations. If that is the case, this would be really nasty.<p>Edit: someone on twitter says it is probably RF interference <a href="https://twitter.com/jcenters/status/794273083469139968" rel="nofollow">https://twitter.com/jcenters/status/794273083469139968</a>
Just looking at all those dongles he has to use makes me sad. Apple makes wonderful hardware but what a hassle to not have an HDMI cable and regular USB.<p>So Apple expects me to use a dongle for HDMI, a dongle for USB and a dongle for ethernet. A bridge too far.
I worked with one of the inventors of WiFi and he always cursed Apple's implementation of the spec and how he could get WiFi to fail in specific circumstances with his mac, when other devices where fine.<p>Of the 3 macs I've owned, I've always had WiFi issues - more so than my other machines.<p>This 'might' be related to whatever their underlying implementation is - sorry I don't know more details.
My first uneducated guess is RF interference. Thinking back to even my first iBook my mac laptops always seemed to have worse wifi reception than my windows laptops.
I'd add WiFi to the list of wireless technologies Apple is too incompetent to implement properly in their laptops along with RF and Bluetooth, but it was already on the list for a few years now. These are the kinds of problems I wouldn't expect a cheap netbook to have, let alone an extremely overpriced, pseudo-pro Apple product. It's finally obvious to everyone (I hope) that Apple's engineering and product design has fallen to shit. I'm sure they will continue to make profits selling their current mediocre and future garbage products, but it's clear to me that Apple always was and probably forever will be Steve Jobs' company. It might survive without him, but it will probably never thrive again, just like it never managed to thrive without him in the past. They had a great ten year run in the laptop field and for that I'm grateful to Apple, but it's clearly been time to move on for a few years now (just based on the declining quality of their software, software which they were never good at writing outside of OS X up to a few years ago). RIP.
Use AirPlay to your Apple TV. I can do that with my 2013 MBP. The power is the only port I use. I use wifi and Bluetooth instead of ports, dongles & cables, I'm not unusual. Get over it - there are more important problems.