I think I solved it…I connected my monitor from the AMD pc (on the INTEL pc I had connected a big TV screen), now the speed is ‘visually’ the same on the INTEL pc… So then I searched for TV settings and found out my Samsung TV has an option for Gaming so it creates lesser frames (I got the info from this website, sorry it is in Dutch: 5 tips om optimaal te gamen op je televisie - Coolblue - alles voor een glimlach). Does this sound right? I would never think of it…but hey, I’m still learning with Unreal Engine 
Anyway, thank you all for your solutions, I really learned a lot from it