I have a GTX 1070 paired with a Ryzen 5 1600 and dual stick 16gb Corsair vengeance LPX DDR4 ram and an Asrock b450 Steel legend motherboard. My frame rate in gpu heavy games like Rainbow Six Siege only get around 190fps max depending on the map. Most of the time it just jumps around from 150 to 115fps all the way down to possibly 90fps. I don’t believe this is normal. I have a Zotac 1070 which I believe come overclocked.