Poor CPU utilization Android

[Magichost]

Using a CPU monitoring app, I was shocked to see PPSSPP utilizing my slowest 4 cores running at 1.8 gigahertz on my Snapdragon 855 chipset. I still have 1 gigahertz to spare but PPSSPP doesn't use it. I was running MotorStorm Arctic edge at the time of the test. Even utilizing the slower cores, I almost got full speed with some stuttering here and there. Why does PPSSPP use the slower cores? I guess I'm going to have to root my device and put in an aggressive CPU governor and manually set my desired CPU speed but I wish I wouldn't have had to do that.