I only played the prologue of the unoptimized build - loved the gameplay, great work!
Now I downloaded the optimized build and have a problem with the Sun (or post processing of the day): It is that strong, that it whites out the whole screen. In the customize menu, there is a slider for "Time of the Day". For values (I assume) are night, the renders look good, but moving Time slightly ahead brightens the screen very quickly and ends in a white out (see pictures).
Playing around with the settings does not change anything. Adjusting the brightness to the minimum value, just changes the screen from white to light gray. This was tested on a laptop with an Intel Iris Xe Graphics (DirectX 12 supported and installed), not a proper graphics card. So it might as well be, that the optimization does not work yet on this chip.