RoadHog 4 low screen refresh rate

Hi!
Having trouble with RoadHog4 display. After repairing console at authorized service in Moscow (ethernet controller was broken), display refresh rate changed to 60Hz. It causes discomfort during work with console.
Is there any information, how to change back screen's refresh rate to 100Hz or smth higher than 60Hz?
Console now working on Hog OS 3.6.0 (updating OS didn't gave anything)