To change the greyed out “Dynamic Shadow Distance MovableLight”, the directional light needs to be set to movable (dynamic), not stationary or static. Is the 2nd directional light stationary? I don’t see how it could have CSM if it’s static…though it could be due to an update or something.
The door on the right looks much better, overall. The distribution exponent seems rather high. It might be resulting in the popping of shadows. With 4 cascades and the distribution of those cascades set closer to the camera (exponent 4, or larger exponents), the first cascade is smaller in distance than the next cascade, and the 2nd cascade is smaller than the next cascade, and so forth. So a 30% transition region isn’t much for the 1st cascade, or probably the 2nd cascade too. I’d set the distribution exponent to 1 or 2 at the most, and try it at lower than 1 to see how it is. If that’s not it, there’s a problem I encountered when setting the Dynamic Shadow Distance Stationary Light, where once I got to the upper limit (right where the far shadow starts), the shadows would turn off entirely. I had to extend the shadow distance value of the light to 50,000 or so it wouldn’t turn the shadows off at those distances within 50,000.