1º I recommend you to put the Fiesta Installer in the USB and if you want to use it in another computer, install it in the Hard Drive.
2º Yeah I think the loading bar issue is a lag problem (I have lots of them)
3º Get a better bandwith service, or try not to download or upload or use the internet in browsers or stuff while you play the game.
I hope I've helped you
Threaded Mode