I have solved it. The problem should be that the memory of each screenshot of mine is not enough to calculate the movable sky light source. When I change the mobility of the sky light source to fixed, the problem of shadow jitter will be gone.
I have solved it. The problem should be that the memory of each screenshot of mine is not enough to calculate the movable sky light source. When I change the mobility of the sky light source to fixed, the problem of shadow jitter will be gone.