Hello 
There is a game i would like to play, but for whatever reason, it plays extremely slowly when running it off the disc. With some searching around people say that it’s because the disc can’t spin fast enough for the game to read at the right speed or something?
anyway it was like playing the game at 3x slow motion or so.
My brother created an ISO file of it for me, which as far as i understand it’s the game itself just as a saveable file.
Now when he did this for me i was on a different computer months ago. and that computer is busted now but i’d like to play the game and i have zero memory of how to actually play the file.
But when he got it up and running on the old computer at ran perfectly and beautifully.
Something about mounting it to a Fake drive i chose the letter for…but that’s really all i remember.
For anyone wondering, this game is Phantasy Star Universe…
and from my tinkering around i can mount it to a drive, install the game, but then after that if i try and open it i get an error in Chinese letters and it closes 
Could i just ask for perhaps a step by step of what program and steps i need to get it running if anyone has the time? 
thanks so much ^-^