Dynamic shadows artifacts

[spacegojira]

Strange. I definitely did not feel that way and bias slider adjustment appeared like the only missing piece to me.
Just in case, the slider maximum is not the maximum value for biases. You can enter larger one by typing in.

Thanks for the suggestion! Turning up Slope Bias to 10 (the maximum) removes most of the shadow artefacts, although it adds some artefacts at other locations. And I wonder what the performance impact of turning it this high is?