Collecting a PC. Processor selection problem.

In general, I decided to change my video card, processor, motherboard and memory for new ones. My choice fell on the Msi geforce gtx 950 2gb video card. But as for the processors, my choice was divided: either the i3-6100 or the fx 6300. And I just can't choose. I've looked at all the tests, but you won't understand anything from them. On some with ay3 you can almost play at ultras, on others with fx. I read the comments, but some praise the Intel, others call it a "plug" and "office stone". Therefore, I ask for help here, who will explain which percentage is better to take. From the games so far I play only the Witcher 3 (at the minimum, and then it jams). Plus, they also say that prots from amd do not last long due to heating. ... Plus, the i3 chip is that you can then easily change it to i5 or i7, because ddr4. There is no such thing on AMD.