What I think is the problem is the program is not optimized for windows 10. My friends who have windows 7 seem to load the program quickly. The others . like me, that are running windows 10 wait several minutes for  the program to start installing. That seems to be the difference. that I can find. for some reason, windows 10 thinks its a virus and slowly installs it.   Note... it has been like this since the update of WOT...every Aslains modpack goes in slowly