Thank you for posting. A couple of questions to help you resolve this:
What type of screen and projector are you using? – Does the “blurriness” move when you move the projector (just to establish what’s causing it). – Have you checked the projector lens ( only do this when it’s OFF and not warm anymore), does it have any smudges or damage to it? – Do you see the blurriness also when you don’t have a computer connected and the projector is projecting a blank screen? – Has the lamp in the projector recently been changed?
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