Tested on a cellphone with Hexa-core (4x1.4 GHz Cortex-A53 & 2x1.8 GHz Cortex-A72, probably using only 1 core I guess?), used an a600 whdload config and all games that don’t have a large copper list (the gradients in the sky) run perfectly max 65-75 fps but If the opposite, it crawls (call me Jim power, creatures, lionheart, risky woods to name a few) on 35-45 fps. Isn’t it possible to add an older copper emulator on that version?
If I recall; Jim Power, specifically, has issues with emulation.
Turrican II, that also uses copper, should run fine to use as a test.