SIGMA BLUR
FEATURES
Adjustable individual METER background blur
Optional blur, borders, and shading
Scalable for any resolution
Optional rounded corners (for Win 11 admirers

And many more skins...
"Thanks" to member nek and other members who posted tips on optimizing skins,
I have modified my original (CPU intensive) SIGMA suite to use as little resources as possible
and achieve selectable blurring for individual meters in skins.
Requires:
ImageMagick program installed (see KHanhas's plugin for installation instructions; his plugin is included in this package)
Rainmeter 4.5.0.0 +
Windows 10 +
DA Link: https://www.deviantart.com/eclectic-tech/art/Sigma-Blur-947181979