If the OP is only configured with 4GB, I could see how he could use more RAM. But there are other possibilities for his situation . . .
I have a Win 7 2700K system and a Win 10 6700K system. Both of them always had 16GB 2x8 installed, tested, running tip-top at full spec. Last year and recurring until maybe March, I could open several tabs in either IE or MS EDGE, and eventually a page would lock up or enter a perpetual loop of "loading . . . loading . . . loading." Sometimes the entire web browser would freeze up. Yes it would hog clock cycles.
On both systems, all of those problems just seemed to disappear earlier this spring. Also, it may have been my IS/AV suite, and I was never able to resolve it for sure.
You can have several active tabs on your browser, and they WILL grab clock cycles with perpetually-updating of animations and other features.
I have 16GB of RAM on the Skylake system, and use about 4GB of that for caching an SSD. I always have plenty for games with some headroom. As a real hardware junkie and addict, I finally could not help myself from ordering a second identical memory kit for 32GB total, and that is at least 8 to 12GB more than I really need. This isn't the first time I dropped more than $150 on an "experiment."
I might have ordered a 2x16 kit for $380 as a better choice. This way, it costs me $184, but I may have to live with lower settings if two identical DDR4 3200 kits aren't reliable at stock speed -- which after all is "overclocked."
Returning to the OP's problem, I'd think he'd be better with at least 2x4 8GB whether it solves his problem or not.