What is the 'realtime' process priority setting for?

Question

From what I\'ve read in the past, you\'re encouraged not to change the priority of your Windows applications programmatically, and if you do, you should never change them to

Answer 1

Like all other answers before real time gives that program the utmost priority class. Nothing is processed until that program has been processed.
On my pentium 4 machine I set minecraft to real time a lot since it increases the game performance a lot, and the system seems completely stable. so realtime isn't as bad as it seems, just if you have a multi-core set a program's affinity to a specific core or cores (just not all of them, just to let everything else be able to run in case the real time set programs gets hung up) and set the priority to real time.