Log process parameters and return value
For some Processes, you can mostly be interested in the execution performance and latency. This is especially true for any API Processes called often. Setting the Log level for such Processes to Only errors will speed up the execution and reduce the amount of redundant log data.
However, you could still be interested in logging the complete request and response data for the Process, for example, for internal auditing purposes. For this, you can just turn on Log process parameters and return value. When set, all Process input parameters passed from the Trigger, as well as any values returned (including intermediate return values) are logged. The data is then visible in the Process Instance List View.
The next article is Introduction to Process Instance history retention period