EditExpressions slow

I have a CC5 character whose face I adjusted multiple times, modifying the mesh in
DCC software(3dsmax) and replacing it in OBJ. (The original model is _HD Neutral F.)
I finished modifying the model and closed the eyes, the eyeballs were slightly protruding.
When I adjusted the eye blink using EditExpressions,
it took an extremely long time to run QuickUpDate.(four or five minutes)

My PC has 64GB of RAM, and it’s quickly using up nearly 64GB.
It also sometimes crashes during the process.
I baked the CC5 Morphs data because I thought it would slow things down.

When I tested it using the standard CC5 model (_HD Neutral F), QuickUpDate completed in an instant.

Is some kind of garbage accumulating in the data?
Is there any way to clean it up?