I will say I had 1 time i needed it. It was my Samsung Odessey monitor. It supports freesync but I noticed when it was on there would be a slight flicker. Dealt with it for probably 2 years before looking into it. Low and behold online comments all said firmware fixed it. It worked, fixed it and now it’s been fantastic ever since. One of the only times an update on a screen did something amazing. It’s not the norm but the excception.