Adreno 420 (Snapdragon 805 - Galaxy Note 4) poor performance

[[Unknown]]

You're not in power-saving mode right?

One thing we've seen on some devices is the CPU governor deciding that PPSSPP isn't using that much CPU, and then downclocking things to save battery power (which then hurts performance.) You can try turning Force real clock sync on, which might impact that decision (maybe.)

Let me ask this - if you fast forward, can it go faster? This will automatically enable frameskip and ignore the framelimiter (which could potentially be something other than 60 fps on your device? my Nexus 5 has 58 unfortunately.) If it's able to go much faster than 100% speed, it should eliminate CPU from being the bottleneck.

-[Unknown]