Monitor goes black for one second when refrigerator turns on

Mar 28, 2018
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hi all.
i have recently buy this monitor: BenQ-PD3200Q
the problem is, as i said that the screen goes black for just one or two seconds whenever my refrigerator or any other appliance (like mixer) turn on.
what should i do?
would this device help: https://powerwalker.com/?lang=en&page=product&item=10120300
i assume it lovers the current if it's too high, but could it compensate low voltage which occurs when refrigerate pulls more electricity?

by the way, i didn't have this problem with my old monitor: LG Flatron