Property for folder size C:\users slowest evaluation in my environment

I have an analyses to get the size of the C:\users folder. It takes some of my servers a VERY long time to process it according to the client evaluation. It’s not been noticeably causing any issues and it only evaluates it once a day.

Any ideas on speeding it up?

if (exists folder “C:\users”) then ((it / 1024 / 1024 / 1024) of sum of sizes of descendants of folders “C:\users” as string & " GB") else “N/A”