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I have two 4k Dell monitors. Works well with no issues. Are you using DP? That's important.

• mjsweet 5y ago
  Yeah, I'm using a USB-C to DisplayPort cable with the Samsung. What I didn't say was that I've disconnected my Dell for now (it was in portrait mode) and I'm just using the Samsun 4K 27" until I can figure out something that works better.
  • sgt 5y ago
    Maybe there's something up with the cable. Have you tried another one? Also try another port. The electrical characteristics sometime seem to be very sensitive for DP.
    • mjsweet 5y ago
      I will definitely give it a try.