NewReborn

You only have 4GB RAM installed - that's the problem. 8GB is minimum nowadays and 16GB is recommended.

Sadly for you, there is nothing to be done. It's pretty obvious from the screenshots and behaviour that your CPU is bottleneckign the 1080 quite severely. And that's normal. The 7600K is quite weak for a 1080 and is well known to bottleneck it. Hence why people stopped buying those a while back.

Looks good to me. The R5 1600 and i5 8400 are both excellent choices. A note of advice - do not buy into dead products like the i7 6700 - it's slower than the 1600 and 8400 both.

Avoid Razer refurbs like the plague...mainly because they essentially are a plague!

Other people are smart, that's why. Some people on this forum simply post without thinking so as to farm posts. Sad but true. Be careful who you listen to. 1.4v is perfectly fine on Ryzen. You have absolutely nothing to worry about. 1.35v is an old guideline that used to apply to Haswell CPUs for novice overclockers.

Z370 doesn't have an upgrade option beyond the 8700K. If you want 8-core IceLake, you'll need a Z390 board due in the end of 2018 only AM4 gets more CPU generations on it

The Surface laptop is a very poor purchase if you ask me. It is actually not possible to open it up for cleaning and maintenance without heatgunning the keyboard and ripping it apart with a knife. The Surface Book is a better device but the GPU inside is horrible for gaming without dramatically turning down resolution and ending up with a blurry mess of a game. The MX150 is really the bare minimum (it's akin to a GT 1030 or a last gen 950M) when it comes to playing a game at a resolution higher than 1280x720. Hence why I recommended the Swift 3 - it's probably the best option for the price.

XPS 15 information: https://www.ultrabookreview.com/14875-fix-throttling-xps-15/ As for Razer - that's common knowledge found on any forum really As for a suggestion for a device. Acer Swift 3 is a great option. It comes with a quad-core 8250U or 8550U and a MX150

The XPS 15 has cooling problems unless you mod the cooling solution. The VRMs reach over 100*C and the CPU throttles to 1GHz making it next to useless. As for the Razer devices - stay far and away. The quality control is garbage, the cooling is horrible, the customer support is probably the worst in the business. You're better off burning the money.

If swapping the cards, uninstall the drivers in safe mode (!) otherwise you will face serious issues with your system if AMD and Nvidia drviers start overlapping. though as you can see here - http://gpu.userbenchmark.com/Compare/Nvidia-GTX-1050-vs-AMD-HD-7950/3650vs2160 your card is about 10% faster than the 1050 and on the same level as a 1050 Ti

The 7950 is about the same performance as a 1050 Ti (give or take) - the 1050 is a downgrade.

The R5 1600 performs almost the same as a i7 7800X in games. all you need is a decent B350 motherboard such as the ASRock B350 Pro4 or Asus B350 Prime Plus. The R5 1600 has a very good stock cooler

200 euros for an i5 is ridiculous. They're not worth that kind of money with next gen i3s coming in at 120 euros and 6-core Ryzen CPUs coming in at 200 euros. If you want an i5, buy the 4570, if you want to spend 200 euros, buy Ryzen 5. But 200 euros for a 6600 is a total waste of money because it is objectively worse than R5s and only 10% faster than the 4570/

Kaby i5s are a dead end. They're being rebranded into i3s if information so far is to be confirmed. Besides, the 1600(X) already outperform the current i5s in games because modern games use 8 threads/cores pretty damn well and the extra clockspeed on i5s is not enough. This is very evident by the fact that i5s are bottlenecking higher end cards (1070/1080) at 1080p whereas the R5 1600(X) are not having trouble keeping up with those GPUs. Take it this way, if you buy an i5 now, it's going to be slightly weaker than next gen's quad-core i3s. If you buy a R5 1600(X) now, you're going to have a CPU equivalent to next gen's i5s. (next gen i5s are moving to 6 cores with lower clockspeeds)