Parking lot door checkers again

How do you not get 60hz flicker at 1/250? I get terrible rolling flicker at anything above 1/120 at night. Could you post your night time exposure tab?

This is what I get at 1/250 at night.


Here is the exposure tab settings.
View attachment 71915


Sure, I will tonight after work. I'm not sure on the light as its on the building not an actual street light.
 
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