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Even when you switched to the Mac Studio? My laptop is on battery when inactive.

Oh that I guess is correct - my laptop is mostly off even the Mac is “activated” so I haven’t had a bug test case of the laptop being on while using the Mac.
 
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To update: the Cable Matters USB C switch works perfectly with my Studio Display, Mac Studio Ultra and Dell Precision. Just use cables included and it’s plug and play. It also keeps the Dell laptop fully charged. I have a Logitech receiver plugged into the Studio Display so both keyboard and mouse work with both machines flawlessly.

A great deal for $60ish.
5K 60Hz on the Studio Display?
 
To update: the Cable Matters USB C switch works perfectly with my Studio Display, Mac Studio Ultra and Dell Precision. Just use cables included and it’s plug and play. It also keeps the Dell laptop fully charged. I have a Logitech receiver plugged into the Studio Display so both keyboard and mouse work with both machines flawlessly.

A great deal for $60ish.
Do you know if this passes through webcam and mic data correctly? I got the Amazon one linked above in my previous reply. I noticed the webcam and mic from my LG ultrafine 5k works fine when connected to my work mbp through the switched, but not when I have it switched to my m4 Mac mini. The other mic and webcam from my 2nd LG 5k connected ONLY to my m4 mini works fine, just not the one through the switcher. And that one works fine through the switch when connected to my mbp.
 
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Do you know if this passes through webcam and mic data correctly? I got the Amazon one linked above in my previous reply. I noticed the webcam and mic from my LG ultrafine 5k works fine when connected to my work mbp through the switched, but not when I have it switched to my m4 Mac mini. The other mic and webcam from my 2nd LG 5k connected ONLY to my m4 mini works fine, just not the one through the switcher. And that one works fine through the switch when connected to my mbp.
Compare the USB devices in both cases. Are they connected using USB 2.0 speed or USB 3.x speed?

With an LG UltraFine 5K display, you can only get 4K60 or 5K39 with the switch. 5K60 is impossible.

Which model of LG UltraFine 5K do you have? An older model only supports Thunderbolt connection. It might work at Thunderbolt 2 speed with the switch and have USB 3.x?

Check the Thunderbolt/USB/PCI tabs of Apple System Information.app to see how the displays/cameras/audio devices are connected and at what speed they are connected at.
 
Do you know if this passes through webcam and mic data correctly? I got the Amazon one linked above in my previous reply. I noticed the webcam and mic from my LG ultrafine 5k works fine when connected to my work mbp through the switched, but not when I have it switched to my m4 Mac mini. The other mic and webcam from my 2nd LG 5k connected ONLY to my m4 mini works fine, just not the one through the switcher. And that one works fine through the switch when connected to my mbp.
I’ve had no issues but to be fair not used FaceTime on my studio ultra yet. Teams on my work Dell works great.
 
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