Full-quality wallpaper
Stops Windows recompressing JPEG wallpapers.
Applying it needs Nexus Standard or Pro. Every plan can read it here and undo it in Restore Center. Compare plans
What it changes
HKCU\Control Panel\Desktop\JPEGImportQuality = 100
Before anything is written, the review screen shows this setting's current value on your PC next to the new one.
Why it helps
Sharper wallpaper without compression artefacts.
Trade-offs
None.
Evidence
Strong evidence means: documented by microsoft or consistently measurable. Expected impact is small (1 of 3): how much it can matter when this is actually the bottleneck on your PC, not a promised gain.
Is it in a pack?
No. It isn't hand-picked as recommended, so you apply it on its own, after reading the trade-offs.
How to undo
Switch the tweak off in Nexus, or open Restore Center and restore this change (or choose Undo last change). Nexus writes back the original value it recorded before applying, not a generic default, then reads it back to confirm.
Like applying it, undoing it takes full effect after you sign out and back in.
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