Disable Core Isolation / VBS
Also searched as: memory integrity · virtualization based security · HVCI
What it does
Turns off virtualization-based security / memory integrity, which can cost CPU performance.
The honest verdict
Graded risky. Real performance gain, real security cost — it removes a kernel exploit mitigation. The gain is genuine: often a few percent, and more in some CPU-bound games depending on your chip — but you're trading away a real protection for it, so Compy shows it as a trade-off you decide, never auto-applied.
It's on Compy's refuse list. Compy will never apply this tweak — and if a guide already talked you into it, reversibility is the whole point of the app.
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.
See Compy →