Strobe Light causing artifacts

Hi,
i am planning to make a short video with a lot of strobe lights. I created a blueprint actor with a point light that starts strobing on a sequencer event. While strobing, the light creates some artifacts around it.
Are there any settings to get rid of these artifacts or at least to lessen them? I am using a blank Film / Video project with raytracing enabled on 5.1

2023-03-18 23-18-37.mkv (1.8 MB)