I have the same problem. The reason it sounds "choppy" is that Teams only recognises the XM4 as a "Hands-Free device". This sounds really awful. Every now and then it also lists the headphones as the normal XM4s, then it's suddenly great, but that quickly goes away.

Conclusion: the headphones are good but useless for teams.

Did you arrive at a solution?

Based on your description and the answers here I assume that your Windows 10 computer only has Bluetooth 4 and is connecting to the XM4 via the HFP. Bluetooth 4 is half the speed of Bluetooth 5 and more susceptible to interference, both of which affect sound quality. HFP is specifically designed for making phone calls while HSP is intended for phone calls and connecting to laptops. In the help guide for the XM5 it indicates that HFP is best when you have a choice.

The only real options here are to upgrade the Bluetooth of the computer, but you could do this in three ways.

1. Upgrade the internal Bluetooth card. This probably also means upgrading the WiFi card since they are usually combined.

2. Use an external Bluetooth dongle . Ideally this would use a detachable antenna for a stronger connection.

3. Use a Bluetooth bridge so the wireless connection is being handled independently of the computer. Audio in and out would then be connected to the computer by a cable.

Hi, I had the Bose QC35 until recently, they are very old now. Then I bought the Sony M4 and they are good with the mobile phone.
Unfortunately with any other device really bad I have switched to stable connection and also only 1 device. None of this helps!
Does anyone have a solution, because I think it would be a shame if I had to give them back!
At the moment, thanks to the features, very cool headphones, even with the Touch.

Bluetooth devices are forced to use a bad quality codec when you want to do two-way audio. You should probably get a dedicated headset on PC, which does not rely on Bluetooth. Multipoint connection does not allow you to listen to two devices at the same time. Rather it only switches device connection when one does not output any audio. Unfortunately this is how the device was designed. Sony should do better than releasing a half solution to what people actually want.

The xm3 was much worse than the XM4. I talk on my XM4 almost every day and it's not a problem, unless there's wind and other noises like traffic on the main road, then it sometimes drowns out my voice. Have you updated the software? Sometimes it helps