In case Bagisto is loading slowly you can do the following things:
Pull the latest changes from our repository 
bagisto/bagisto because we added fixes related to the load time.
Open 
.env  and change APP_DEBUG=true to APP_DEBUG=false.
Change the php memory limit to 3 or 4G in your 
php.ini file.
In case you are using vagrant / homestead make sure that the virtual machine has enough memory.