I would recommend you to download MSI afterburner and activate frametime monitoring as combo (instead of text) as shown in the video below. Check for spikes and if games are fluid. Witcher 3 in Novograd is a good test spot. The youtube user in the video below have an I7-8700k coupled with a GTX 1050TI, not high average framerates, but smooth frametimes and therefore still very fluid in modern games.
I'm going to test out frametime monitoring later with some games I currently have installed on my system- Tomb Raider, Rise of the Tomb Raider etc