Epic folder allocates huge space

Thank you for your answer! I thought so too but I wanted to have confirmation of this. I reinstalled the OS and created a partition to install Epic Games and Unreal Engine, this to prevent that my computer “freezing” free space. Am I wrong to install it on a partition?

I was surprised by all this space because we are talking about a very small ArchViz: three rooms. I think are its size, I was forced to use full scale because I had problems with some small objects created in sculpture mode - Blender: they disappeared once imported into the UE. I noticed that the mesh was too tight, in fact, enlarging them they reappeared.

I thought I could work with my HD and just move the finished project to my external hard drive. The project is only 22GB.

So to solve the problem I was thinking of buying a WD My Cloud Home Duo 4T and dedicating 2T only for the EU and the other 2T to my projects.

I would like to know, once the project is finished, can I trash the caches by saving the project only? I am still a beginner and I would not want to lose everything.

If instead it were necessary to always a copy of everything: how many terabyte would be needed?