Since it's a laptop, I'll try first disabling Turbo Boost. Yes, it sounds counterintuitive, but (as NickN's Bible says) set up your computer and sim, and after having it stable and smooth, overclock it (or enable back Turbo Boost). You'll save some head banging...
I like your CPU; it should do fine, or at least a lot better than my laptop (i5-7200U, 6 GB RAM, GeForce 940MX).