Bluetooth issues with Airpods PRO, Magic keyboard and Magic trackpad

Bluetooth uses the same part of the wireless Spectrum as 2.4 GHz Wi-Fi, but does frequency-hopping (changing channels frequently) to work through the typical congestion there. Microwave ovens, baby monitors, cordless land-line phones, Internet-of-Things devices, and many more also compete for the same spectrum.

Badly-shielded USB-3 peripheral devices near your computer can cause additional interference.

If you can't reduce the clutter in that part of the spectrum, if you could convert ANY of you 'wireless" devices to corded operation, you may be better off. Your AirPods probably use the most bandwidth.

Why do I have difficulty with Wi-Fi or Bluetooth devices when USB 3 devices are attached to my computer?

Some USB 3 devices can generate radio frequency interference that can cause Wi-Fi and Bluetooth devices operating in the 2.4GHz band to have issues communicating with your computer. Here are some tips to avoid this issue:

• If your USB device has a cable long enough that you can move the device, place it away from your Mac—and make sure not to place it behind your Mac, or near the hinge of its display. The antennas for Wi-Fi and Bluetooth are located there, and USB 3 devices placed there might interfere with your wireless connections.

• If you're using adapters or dongles on a Mac computer with Thunderbolt 3 (USB-C) ports, plug them into the front port on the left side of your Mac, or into the ports on the right side (if your computer has them). These ports are the farthest away from the antennas, making interference less likely.

• To avoid interference on the 2.4GHz band using Wi-Fi, try using the 5GHz band instead. You can change this on your wireless base station. Bluetooth always uses 2.4GHz, so this alternative isn't available for Bluetooth.

from:

Resolve Wi-Fi and Bluetooth issues caused by wireless interference - Apple Support

Once you have many neighbors on Wi-Fi, including Internet of Things devices, and try to use badly-shielded USB-3 peripherals near your computer, and try to use multiple wireless Bluetooth devices all at the same time, there may be traffic jam in your network neighborhood.

All of these device (except badly-shielded USB-3 devices) are likely operating as designed. Your "network neighborhood" is just too busy. The cost of these devices makes no difference whatever. It's the airways around your computer that are the issue.

You are welcome to pursue this with Apple support:

Official Apple Support

or to post your feedback on the product feedback pages:

Product Feedback - Apple

Many overlapping wireless devices, like the ones seen in that's spectrum map, will not work worth anything, and adding Bluetooth devices on top of this mess will not work better. It's just too crowded.