When you minimize HUDWAY Drive app on your Android phone, you may see that directions, speed, and everything else related to navigation lags.
This happens because starting Android 8.0, the firmware manufacturers (Samsung, Google, Xiaomi, Huawei, Meizu, Asus, etc.) introduced new battery optimization opportunities which are by default enabled for the apps you install from Google Play.
This mostly affects location-related services, and downloading files when the app is minimized.
To resolve this, please go to your Android phone Settings > All apps > Drive, and set it to Don't optimize.
Depending on your phone manufacturer, the actual path to disable battery optimization for the selected app may vary. Luckily, there are workarounds for nearly every version. Find it for yours here: https://dontkillmyapp.com