Disable memory compression
Also searched as: disable-mmagent · memory compression · mmagent · compressed memory
What it does
Turns off Windows' in-RAM compression of idle memory pages (Disable-MMAgent -mc).
The honest verdict
Graded placebo. Sold as cutting CPU overhead, but the overhead is tiny and the cost is real: under memory pressure cold pages go to disk instead of staying compressed in RAM — slower exactly when you're squeezed (game + browser + voice chat). Stock (on) is the right call on almost every rig; Compy's Optimization Cleanup check flags this when an old guide left it off.
Compy won't recommend it. If you're curious anyway: change one thing at a time, measure it on your own rig, and revert unless it's clearly better — that loop is exactly what Compy is built around.
The full graded entry
This entry ships inside the app, cross-linked to every related verdict in the graded book. The Blackbook publishes its verdicts here — the full write-ups stay in the book, on your rig, next to your own measurements.
The Compy Blackbook holds 191 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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