The reasons that the earbuds lag in some environments are as follows:
1. The RF (Radio Frequency) performance problem of the earbuds;
2. The RF performance problem of the mobile phone;
3. The usage environment of the earbuds and whether there are any obstacles or impedances between the earbuds and the phone;
If you find that the earbuds are intermittent during use, you need to confirm whether the antenna of the earbuds is blocked during running and whether there is any wireless environmental impact in the running environment (Such as Wi-Fi, mobile phone base stations, transformers, high-power electrical devices, etc.).