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Why does the plugin use all 16GB of my memory when I import models. It didn't do this before.

I don't think I changed anything in how the model importing code works recently...
You have any more information for me?

Working with this on 4.26 I am also having extreme memory usage issues when importing materials to the point that unreal crashes as it runs out of memory (64GB+ of RAM & 100GB+ Pagefile Size) when doing imports - typically at the "creating materials" stage. Running the same import on previous versions does not seem to cause this issue, possible memory leak?

I'll do some investigating while I do my rewrites for UE5, and release the same changes in an UE4.26 version

Hopefully the switch to VTFLib fixes this.