ISBoxer includes a feature to detect CPU throttling, and warn that this may cause poor performance. CPU throttling is most common on laptops, where maximum output is not typically necessary (or desired). However, when you have several game windows open, it's time to let loose! Any GamePerformance
This guide has tips for improving overall performance while multiboxing; from ISBoxer settings to in-game settings, and as a last resort, even hardware upgrades. Any GamePerformance