frameRate() determines how many times per second (FPS) to keep calling draw() over and over.

if draw() finishes below the milliseconds threshold of that FPS, Processing waits up to call draw() again.

However, if draw() takes more than its supposed FPS, then Processing calls another draw() ASAP.

But as you can see from this later situation, the FPS itself failed due either a weak hardware
or a mal-programmed code inside draw()!

You may try to get same performance for different devices using the lowest common denominator:
if the weakest hardware can only run your software @ 33 FPS, set frameRate(33) then!

But it's very strange that the Asus model ignores the frameRate()'s limit!

On 2 of my android devices framerate() is capped to 60 ...