notification latency

[consulting99]

I built a game controller hardware for windows . I am supposed to have a few millisec. latency on notifications. 

But the latency seems to be noticeable. I have also tried before communication between an esp32 and nrf52 dk and also between 2 NRF DK, on pressing button ( the ble_app_uart_pca10040e_s112 example ) the latency was noticeable.

I don't see a de-bounce function etc. or any intentional delay added in the main.c file and have no clue what is causing this latency.

What do I need to tweak? 

[Karl Ylvisaker]

Hello,

That sounds strange - a noticeable delay will require several connection events to pass without the notification being sent.
Are you familiar with the nRF Sniffer tool? It would be great if you could capture a sniffer trace of the on-air communication between the two devices when this happens, so that we may see what is actually being sent between them and identify if the delay happens on-air or somewhere in the application.

Best regards,
Karl