when hiding an animated object it still contributes on the lagging to refresh frames that delays animation

[digital_technologies]

when you have an animated deforming vertices ojbect with many polygons it cuases a delay every frame to refresh, (for a 2million polygons tree the delay between every frame is 4 seconds).
when i hide the object I would expect the scene to render faster but the lagging persists,
it only goes away if you delete the object
can you fix this issue , so when hide the object the delay should disappear
thanks