Intermittend blackscreens

[Cethology]

So, I just bought a new 144hz 1440p Monitor. Before I was using 2 1080p @60Hz Monitors and everything worked fine, but after connecting the new monitor I noticed that when gaming the screen turns black for a few seconds and then comes back. Everytime this happens it says "DP" in the upper right corner like the monitor was reconnected. I also see some random artifacts that go across the screen from time to time. The cbales arent the problem and neither is the monitor itself, because I tested with my old GTX 950 and it worked fine.

 

Specs: XFX RX 580, Ryzen 7 2700x, G.Skill aegis 16gb ddr4, samsung evo 970 m.2, asus x470 pro, corsair 650w psu, win 10

 

I already tried reinstalling latest and some older AMD drivers, disconnecting the 2. Monitor, setting HZ to 120/60, resolution to 1080p, undervolting. Another thing I noticed was that the GPU runs at 50°C on idle with fans randomly revving up and under load it can reach 85°C at 144hz and 75° at 120hz. Any help is aprreciated. Any help is aprreciated.

[SenKa]

You're sure it isn't the cable, because this sounds exactly like the cable.

 

Did you try another one anyways? DP cables don't cost much.

[Ravendarat]

I had this exact problem, I was sure it wasnt the cable and tried all sorts of fixes to no avail, but you know what fixed it, a new cable

[Cethology]

I have already tried one or two different cables. the one that came with the monitor, amazon basics i think and this one : https://www.amazon.de/IVANKY-DisplayPort-geeignet-Monitor-Gaming-Grafikkarte-Grau/dp/B07JQKWX3C