Automated index updates performance impact

Hi,

We are calling view with STALE_AFTER, it gives us result immediately and starts building view after that call.
We are having just 100 documents that why are getting just ZERO result and calling the view again gives 100 result.

Since couchbase configuration is
{
“updateInterval”:5000,
“updateMinChanges”:5000,
“replicaUpdateMinChanges”:5000
}
Our view automatically get updated after 5 sec only if there is 5000 changes.
We will change the updateMinChanges to 1, so that on each/single document update, Our view Index update get started.

So Is there any performance impact to couchbase due to this change.