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MoBo sabotaging peripherals?

For those that don't want to click through, the article say two things:

  • Wireless transceivers can pick up interference from poorly shielded motherboards. Physically separating them can help.
  • USB devices connected to the same root hub share bandwidth, which may add latency. Connecting devices to different root hubs avoids that problem.

Personally, I have one of my two* bluetoth adapters placed about 1m from my PC on the end of a USB extension cable. The other is connected directly to the PC, but has an antenna positioned a short distance away at the end of a coax cable. This definitely increases the range they work at, though it's largely because of the metal in my PC case and monitors blocking the signal, and less because of interference.

I don't see USB bandwidth sharing as being much of a problem. How often are people going to be using both a high-bandwith device and a latency-sensitive device at the same time? And how bad would it have to be before the difference became noticable (you're not going to notice fractions of a millisecond when total latency is in the tens of milliseconds)?

* Annoyingly I need two because all the adapters that support the codec for my headphones are audio-only.
 
Usb3 especially is very noisy.
Common with Home Assistant you have to run the ZigBee dongles on an extension lead or they pretty much don't work.
 
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