Everything works too slow

Hi. I have an assembly of some machine and around 30 configurations for different sizes and options of the machine. Normally I try to save all parts externally. I also have good tree structure. Anyway the assembly file alone is 130MB in size, and it takes 3 minutes to open the file through network drive and 10 minutes to save it. Is there a way to speed this thing up?

Also everything works 10 times slower than usually. Making a new dimension, changing a dimension in assembly, opening a part from assembly... literally everything is slower.

SolidworksConfigurations design Tables