When looking at the debug panel everything is fine, but if I have a look at the task manager, each entity created from the same model file consumes about 2mb. I currently just have an empty function assigned to the entities. And it is a problem as I want to create about 2k of those entities and I currently just get a "crash in: SYS" message or something like that.
If I think right, it should only consume about the models file size one time + sizeof(ENTITY)*2000 which should only be like 5mb and not several gigabytes.
It would be great if someone could tell me what I am doing wrong or at least where this behaviour comes from.

Seems to work fine, per new entity the task manager returns 90-100kb more (file is 2,4mb).

I know that you are an experienced user but have you got (by accident) somewhere "ent_clone" written in your code?

When writing ent_clone in the entity function the consumed memory just gets even more, so that seems to work
It is always a bit more than 2mb per new entity for me, which is about the size of the mesh without texture. And there definatly is no ent_clone as it isn´t more than the code you show above.

You're right, I removed the skin and multiplied the vertices and faces (to 55k). The model is now 3,6mb (mesh only, no skin) and the allocated memory in the task manager increases per new created entity by 3,6mb.