large brewery interior takes days to process

Hey, Sorry for the long wait. I was on project ;) 

I captured the portal part of the room with lots of shots but not the next rooms. All of the images have the same location but only arbitrary of course. 

 

I find it so unusual that everything takes forever and ever and crashes usually. also that I can not combine the components is odd. 

 

I think I may run out of memory? But each HDD has around 300GB space left. 

Do you know how much is required for a scene like this? The reality capture temp file gets insanely huge.