Downloading dependencies

when oepn a xaml. will show downloading dependencies…long time on server win2013. what is problem ?
if the workflow copy from other PC.

For each activities there are dependency of multiple libraries, hence it is downloading all required codependency

dear bro: downloading from internet or which folder ? can setting to improve it ? almost 5mins or 10mins waiting it .thanks.

go to manage packages and disable Auto update options