ok so my older Xbox One controller keeps disconnecting from my Xbox Series X when the battery is half full. The game pauses and i get this:

Controller disconnected
Reconnect the wireless controller to continue.
Press the home button on the controller,
or connect it with a USB cable.
i put in fresh batteries, i re-paired it with the sync button, and i even moved closer to the TV. It reconnects after a few seconds, but in competitive games those seconds matter. Is there something in settings, or is the controller faulty?
I tried a second controller from a friend for comparison, and it seemed a bit better, but I'm not sure if that was luck. I'd rather understand the cause.
RAM prices doing their own thing again smh