https://community.appian.com/discussions/f/process/40360/process-model--split-using-and-gateHi Community, Let’s say I have 15 nodes in a process model. Scenario 1: The nodes are placed linearly and execute one after another. Scenario 2: The nodes are split into 5 branches, with 3 nodes in each branch, using an AND/OR gate. On testingen-USTelligent Community 12https://community.appian.com/thread/154366?ContentTypeID=1Wed, 22 Apr 2026 12:28:29 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:a1698c2f-756e-486f-a72f-e8d538c5a193maithrih0093<p>Okay, Thanks .</p><div style="clear:both;"></div>https://community.appian.com/thread/154365?ContentTypeID=1Wed, 22 Apr 2026 12:27:56 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:685412ff-5bb3-4f99-af2f-623ec79d03cdmaithrih0093<p>I wanted to speed up things</p><div style="clear:both;"></div>https://community.appian.com/thread/154364?ContentTypeID=1Wed, 22 Apr 2026 12:15:34 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:1bbc694b-e179-45d0-b9ab-82b87dcdd794Shubham Aware<p>AFAIK, Appian does run one process instance on one execution engine - so even with AND parallel branches, all nodes are processed by that single engine, meaning:<br />True thread-level parallelism doesn&#39;t happen within one instance<br />Branches are queued and picked up by the same engine serially.<br />The parallel in AND gateway is logical, not true concurrent threading within a single instance.</p> <p>True speedup only via background startprocess() - each gets its own engine instance.</p><div style="clear:both;"></div>https://community.appian.com/thread/154363?ContentTypeID=1Wed, 22 Apr 2026 11:42:46 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:a4a9c80d-c717-4713-b88b-c57e153744e9Stefan Helzle<p>The process follows the logic, but the individual nodes are enqueued and executed by one of the multiple execution engines.</p> <p>Is this just out of curiosity, or do you have the need to speed up things?</p><div style="clear:both;"></div>