Finally I managed to borrow another card and with this card (Radeon HD 5700 with newest drivers) everything works fine. I already ordered a GeForce GTX 1050 Ti today
Thank you guys for all your help!!
Well, yeah.. A friend of mine suggested this card and I think it's a good card for a reasonable price.
It's off-topic but is there an equivalent AMD card in this price category? I've had almost always AMD cards since I got my first computer and usually I was happy with them.
I would say that is accurate. Our 1050 ti overclocks like crazy. Obviously that is luck of the draw and all may not be that way. But if it does, it darn near reaches the 1060 3gb performance.