Why does the Redmi Buds 6 Lite disconnect or delay?

Due to the influence of usage environment, network, and mobile codec speed, there will be varying degrees of delay when transmitting mobile audio data to earbuds. The Redmi Buds 6 Lite adopts true wireless Bluetooth technology, and there will be a certain delay in the audio transmission from the phone to the earbuds. But it will not affect the quality of music and calls. Whether it is the sound details during calls or the rich frequency bands in music, it can present them realistically. If multiple routers or Bluetooth devices are used simultaneously around the Bluetooth earbuds, there will be varying degrees of interference, resulting in lagging, intermittent, and disconnected situations.
Note:
The unobstructed effective connection distance of the mobile phone is 10 meters, and there will be a disconnection after exceeding it.