BES (Battle Encoder Shirasé) is a popular, free, open-source Windows utility used by PC gamers to control aggressive software that hogs 100% of the CPU. By limiting a game or app’s maximum CPU usage, BES prevents system freezes, reduces micro-stutters, lowers hardware temperatures, and allows you to multitask smoothly while heavy processes run in the background. How BES Works
Unlike tools that simply shut off specific CPU cores, BES uses a unique mechanism. It periodically suspends and resumes target processes at millisecond intervals. For example, if you tell BES to limit a process by -5%, it stops that specific program from taking up more than 95% of your total CPU capacity, keeping the remaining 5% free for your operating system and audio drivers. This effectively eliminates the “100% CPU bottleneck” that causes games to temporarily freeze or stutter. Step-by-Step Tutorial: Controlling Aggressive Software
Because BES is a “portable” application, it does not require installation and can be run straight out of a folder.
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