https://devzone.nordicsemi.com/f/nordic-q-a/6077/bluetooth-le-reliable-gatt-characteristic-write-takes-about-90-msHello! We are using an BLE NRF51822 chip as a GATT-Server, unfortunately without any possibility to modify its software at the moment. The BLE-setup should be very similar to this one [http://developer.nordicsemi.com/nRF51_SDK/nRF51_SDK_v7.x.x/docen-USTelligent Community 13Tue, 17 Mar 2015 10:25:34 GMThttps://devzone.nordicsemi.com/thread/21274?ContentTypeID=1Tue, 17 Mar 2015 10:25:34 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4294f8f8-1fc9-40b2-99f8-f05793c04853Stefan Birnir Sverrisson<p>Hi Alex</p> <p>Perhaps <a href="https://devzone.nordicsemi.com/blogs/32/how-different-ble-packet-types-influence-throughpu/">this thread</a> can help you out. Respond with remaining questions.</p><div style="clear:both;"></div>