Xperia Z3 settings

[fivefeet8]

Have you taken a look at the sticky thread on here?
http://forums.ppsspp.org/showthread.php?tid=5236

Your Z3 has the same Snapdragon 801 chipset as my HTC 1m8. You'll likely need auto 1 or 2 frameskipping to achieve playability in most games. And at resolutions of 2x or 1x buffered.