region crop_generation_rate and hires fix

[tnil25]

@s9roll7 I think you need to take a look at how hires fix handles a crop_generation_rate greater than 0 (like 0.1) It results in an error every time. A crop_generation_rate of 0 works fine with hires fix.

However as you stated, using a crop_generation_rate greater than 0 allows the regions to be rendered separately, allowing for more dynamic animations.

Could this possibly be fixed so we can use both features?