Suggestion -- Disable Automation for Archived Tracks
In Sonar 8.5.3, I had a project with some heavy volume and other automation envelopes on one track. When I archived this particular track, and played the project back I noticed that all the automation events were still getting fired for the track.
Since an archived track contributes nothing to the audio, perhaps the automation could be turned off (which could potentially improve overall system performance by oh -- maybe 0.01%)
if (! Track.IsArchived)
{
HandleTrackAutomation();
}