How can I set up a low resolution full screen on a 4K monitor?

Development Programming & Scripting
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1

What’s wrong with the following Settings?

E7205535-3B21-46ec-A8FA-2082F8E8B333
E7205535-3B21-46ec-A8FA-2082F8E8B3331140×646 67.4 KB

674EC396-F6BE-483e-8654-551144834ED9
674EC396-F6BE-483e-8654-551144834ED9755×405 55.5 KB