https://www.bleepingcomputer.com/news/security/cryptocurrency-miner-plays-hide-and-seek-with-popular-games-and-tools/

When the CPU utilization on a computer is high, games become less responsive, frame rate goes down, and gameplay stutters. To diagnose these problems, users will commonly open process manager utilities such as Task Manager, Process Explorer, or Process Hacker to determine if any processes are using too much of the CPU power.

Knowing this, the developer of this mining Trojan does something pretty clever; they terminate the miner when the processes for popular games or process managers are launched. This causes the computer to appear to be operating normally when running certain games and when trying diagnose CPU utilization.