PPSSPP - Samsung Galaxy S6 Edge+ progressive Slowness

[el_rika]

Install a temperature monitor (CPU Temp) and a frequency monitor (Cool Tool) and observe the connection between performance drop, temperature and Cpu frequency. If the device gets to a certain temperature where the CPU automatically lowers its frequency, then that's the issue.

You can then do a few tricks.
One would be to undervolt the CPU and it'll be a little cooler (i recommend it anyway).
Second would be to limit the CPU frequency to about 30% under the maximum and it'll never reach that high temperature (Use a Performance Governor to keep the CPU at the desired frequency non stop as you play). Third (best option) look for a custom kernel that allows you to choose the thermal throttling value and your device will fly