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Microsoft begins cracking down on people dodging Windows 11's system requirements
(www.xda-developers.com)
This is a most excellent place for technology news and articles.
Vista was absolutely the slowest thing imaginable. They reduced the requirements as part of a marketing campaign for "Vista-ready" PCs, but PCs that ran it "well" were few and far between. Even after 7 came out if you went back to Vista it was noticeably slower.
I decided to look up what that term meant.
The minimum specs seem to be an 800Mhz system with 512MB memory. No, Vista will not run good on that. Even Windows 7 will not like it. Windows XP with SP3 will run on that, but even that will feel sluggish on 800Mhz.
That's like early XP computers being released with 64 or 128 Megs of RAM. That may be the minimum specs but it's not gonna be usable.