I am new to UE 5 i tried to make a Crime Scene When the fan is rotating a weird trail can be seen in its surrounding like motion blur, its because of the lights are blinking,

[Eu_sunt_dracul]

https://youtu.be/7SjJMHYtbvE

[ClockworkOcean]

That’s volumetric fog, people are usually ‘trying’ to get that

You could uncheck the ‘volumetric’ box in the height fog actor.