Application with SoftDevice is faster by 20% as without ithttps://devzone.nordicsemi.com/f/nordic-q-a/81956/application-with-softdevice-is-faster-by-20-as-without-itHello, This issue is related to this ticket , before continuing I recommend to read it first. I had suspicion that the &quot;speed&quot; improvement is between project compiled by SEGGER and GCC, but the differences was veeery huge, and I couldn&#39;t believe thaten-USTelligent Community 13Mon, 22 Nov 2021 08:03:04 GMTRE: Application with SoftDevice is faster by 20% as without ithttps://devzone.nordicsemi.com/thread/339956?ContentTypeID=1Mon, 22 Nov 2021 08:03:04 GMT137ad170-7792-4731-bb38-c0d22fbe4515:820fa3b5-ff51-49bf-b484-e0030bf350efDespair1337 <p>Hi Vidar,<br /><br />Thank you very much, I tested it and it works perfectly,<br /><br />Thank you for your time,<br />with regards,<br />Marek Kraus</p><div style="clear:both;"></div>RE: Application with SoftDevice is faster by 20% as without ithttps://devzone.nordicsemi.com/thread/339954?ContentTypeID=1Mon, 22 Nov 2021 07:51:15 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6d3886e9-4dcf-4c97-8f09-510f7cacb183Vidar Berg<p>Hi Marek,</p> <p>It must be because the Softdevice enables the instruction cache by default: <span><a title="Cache" href="https://infocenter.nordicsemi.com/topic/ps_nrf52840/nvmc.html?cp=4_0_0_3_2_7#concept_dh3_cyy_vr">Cache</a></span>.</p> <p>You can add this line on startup to enable instruction cache in your non-softdevice project:</p> <p><pre class="ui-code" data-mode="c_cpp">NRF_NVMC-&gt;ICACHECNF= NVMC_ICACHECNF_CACHEEN_Enabled;</pre></p> <p>Best regards,</p> <p>Vidar</p><div style="clear:both;"></div>