SACS calculation on network


We currently have the issue that calculation a SACS model who is located on a network drives takes a lot longer (multiple hours vs ~50 minutes) then on a local drive (Duh), but we prefer not to have to save the files locally to do the calculation (Backup etc..), is there a way to keep it on the network, and have a better performance? 

Network itself is capable to handle large files without a problem.