If ‘Anti-flicker On/Off’ doesn’t solve it, you should find a value that improves in the following way.

Go to ‘Anti-flicker Off’ -> ‘Exposure Control’ -> ‘Manual’
And, Set Shuter speed Min and Max value the same and manually find a value that improves flicker by setting the value to a multiple of 60.
(ex. 1/60, 1/120