Memory leak in Snapshots?

Hi, this is my first time post here, and I have two issues with snapshots in Rhino6.

1.It seems to have memory leak. When I save or call some snapshots, memory usage has increased steadliy.
Is there any way to release memory?

2.When I save some snapshots and overwrite 3dm file, the file size getting larger and larger.
Is it a kind of features of snapshots? if so then is there any way to lessen file size?

My system:
Rhino 6 SR4 2018-5-4 (Rhino 6, 6.4.18124.12321)
Windows 7 SP1 (Physical RAM: 16Gb)
Quadro K620/PCIe/SSE2 (OpenGL ver:4.6.0 NVIDIA 391.33)

I would appreciate if you give any advices!


Could you send me the model, please. I will take a look.
You can send it through: and use as the recipient.

Hi lars, thank you for the quick response.
I did send the model to you.


I received the model, thanks.
The first problem with the increasing memory: what happens when you run the ClearUndo command?

It works great! Thank you lars!