Hmmmm? for me it did lower the cpu load by about 20%, but not nearly as much as disabling "Play track". 

On Wed, Aug 7, 2024 at 1:27 PM Andrew Randrianasulu via Cin <cin@lists.cinelerra-gg.org> wrote:

I checked and no, "muting" video track does not lower its cpu load on muted portion.....