I'm also experiencing this, and I also have a 4k monitor, although not the same model as David. Mine is an LG 27UD58-B. It's hooked up to a KVM switch and might be taking longer to come up than is normal, but I haven't really noticed that.
I'm also experiencing this, and I also have a 4k monitor, although not the same model as David. Mine is an LG 27UD58-B. It's hooked up to a KVM switch and might be taking longer to come up than is normal, but I haven't really noticed that.