You say your loading time for that template is 35 to 40 minutes - please tell us you're not loading from a spinner drive but an ssd. Or multiple ssd's. If you're on a Mac Pro cheesegrater putting those ssd's in a pcie card adapter will double the loading speed from if they're in the drive bays.
Oh yes multiple ssds of course, and on a PC with double xeon.... Just lots of instruments i guess, and it loads up into about 240gb of ram . I know a couple of fellow composers who have the same "problem", so its normal for a template that size
Huge template then. How many instruments? If you have thousands, then it is what it is. This is another area where if VEP update made a substantial improvement for project load times, through parallelism or something...it would be instant buy for me.