Disable SysMain (Superfetch)
Also searched as: sysmain · superfetch
What it does
Stops the service that preloads frequently-used apps into RAM.
The honest verdict
Frees 0.5–1.5 GB on SSD/NVMe systems where preloading earns nothing. KEEP it on hard drives. Compy already gates this recommendation on your storage type.
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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