USD stich memory leak

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Hello

I am using usdstichclips rop in order to put bgeo.sc sequence of water meshes into one tidy usd file that points to these files.
On some earlier scenes, it would take couple of seconds to do it.

Right now we have meshes that are bit heavier (~20mil polygons per frame). When we run usdstich, it takes couple of seconds to get to last frame and then it stays there and fills out whole 128gb of RAM, until it eventually crashes machine.

We are runing it on Windows 10, 128gb of RAM, writing out to network drive (SMB share).

Tried both on Houdini 19.0.531 and Houdini 19.5.403

Anyone had similar problems?
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