Set Quality Bias
The SupportWindow Console connection Optimizer allows you to set a value called Quality Bias that will cause the Optimizer to choose a better quality value over a faster performance value provided the better performance value is less than (quality bias value) faster. Larger block sizes and greater color depth values are considered better quality. So for instance if the Quality Bias is set to 100 and the Optimizer finds that 8bit 256 color mode is 80 ticks faster than 16bit color, then the 16bit color mode will be automatically selected as the better choice.
See Optimization for more.