CC8531: CC8531+CC2590，Wireless microphone program

Hi, and thanks for all of the help previously,

Now we use the CC8531 + CC2590 design, the firmware inside PurePath WIRELESS Configurator reference program to modify the generated, now can achieve wireless audio transmission, see the official website www.ti.com.cn/.../tidm- wireless-microphone? keyMatch =% E6% 97% A0% E7% BA% BF% E9% BA% A6% E5% 85% 8B% E9% A3% 8E & tisearch = Search-CN- To 14ms below, the transmission distance of 100m, the attachment is the official design guide.

Questions are as follows：

1. Latency: we make the board is now a big delay in audio transmission, may I want to reduce the delay, which aspects need to be improved? The picture below is a screenshot of the project file we use.

2 audio noise: audio transmission, the noise is great. When the audio part does not need to be wirelessly transmitted, the quality of the audio is good, but when the wireless transmission is used, the noise is very loud and the indexes are relatively poor.
3. Transmission distance: Now we do send and receive the transmission distance of only 10cm, how to improve the transmission distance.
Transmitter Schematic (TX) as follows:

Receiver (RX) schematic diagram is as follows:

PCB physical map, the upper part of the transmitter, the lower part of the receiver, the antenna is a ceramic patch antenna.

Trouble to help me analyze the cause of the problem and how to improve it

thank you very much.

1.                   延迟大：我们做出来的板子现在传音频延迟很大，请问想降低延迟，需要从哪些方面做改进？下图为我们使用的工程文件截图。