I have re-programmed this device to display a full matrix of red, green, blue and white at the press of the various buttons. I am concerned whether the 2 driver chips can handle the 192 LEDs all on at once (white).
The chips are, fundamentally 16-channel devices; only 24 LEDs are actually on at any given moment, and doing so should not present any problems. Switching quickly (multiplexing) between 8 rows makes it look like all 192 LEDs are on at the same time.