Disable MPO (Multi-Plane Overlay)
Also searched as: mpo · overlaytestmode · multi plane overlay
What it does
Registry value that turns off a display compositing feature.
The honest verdict
A legitimate FIX for a real flicker/stutter bug on some multi-monitor/VRR setups — but ONLY if you have the symptom. Cargo-culting it on a healthy system does nothing. Reversible.
How Compy treats it
Where it genuinely fits a rig, Compy can recommend it — applied with a snapshot first and a one-click rollback after, like every change it makes.
The Compy Blackbook holds 174 graded entries like this one, judged against your hardware — and every change it does make is reversible, with the receipt to prove it.
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