The 2060 could USE a more powerful CPU, but the Ryzen 7 1700 should be ok with it. Really it depends on what you are mainly playing. VERY CPU intensive games, might struggle with the 1700 especially if they are games that primarily like one or two very strong cores. For games that are well optimized for multithreading though, those will do much better even if there is a high resource demand on the CPU. What resolution you are gaming at will be a factor as well because the more the graphics card is required to do, the less the CPU "needs" to do, in most cases.