To my knowledge Game Mode is no different than any other profile. I used to rename all my profiles when testing, it is just a name, does not make any difference, to me anyways. As for doing it in BIOS, so far identical performance, so just saves me having to apply the OC each time in Ryzen Master.
So far only me and Raven managed to get a good clocker from the people who post in here. He ended up getting a newer batch like mine as his old one did not OC much from what I recall.
4.4GHz all core is a nice OC, especially for a 3600. What makes it sweeter is that it works at 1.275v which mean it runs cooler than stock