https://devzone.nordicsemi.com/f/nordic-q-a/47559/connection-parameters-are-slow-to-updateHi, I&#39;m currently trying to implement a switch between slow and fast connection parameters. For a certain amount of time during a connection the link between peripheral (nRF52832) and central (Android phone) needs to speed up. Therefor when the peripheralen-USTelligent Community 13Tue, 21 May 2019 11:55:03 GMThttps://devzone.nordicsemi.com/thread/188236?ContentTypeID=1Tue, 21 May 2019 11:55:03 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c156b0b9-fc86-4d85-b7ad-b3b8843c53c9Kenneth<p>Sounds that you have already identified the problem.</p> <p>One suggestion is that the peripheral can just send some dummy notifications very frequently after receiving the &quot;start packet&quot;, then it will at the same time &quot;fetch&quot; whatever the central may want to send at every interval (though this will not solve the math behind the slow update of connection interval).</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/188144?ContentTypeID=1Tue, 21 May 2019 08:32:24 GMT137ad170-7792-4731-bb38-c0d22fbe4515:db29f8da-6626-452e-802b-d89a36c63c71AntonHellbe<p>I found this in the Bluetooth 5.0 Core spec:</p> <p>The master should allow a minimum of 6 connection events that the slave will<br />be listening for before the instant occurs, considering that the slave may only<br />be listening once every connSlaveLatency events.</p> <p>So I&#39;m assuming this explains the 16s delay since when we are in slow mode the connection interval is set to min: 1.5s max: 2s, slave latency: 0. 6 connection events = ~12 seconds.</p><div style="clear:both;"></div>