welcome to TFL
A revolver cylinder must be free to rotate without binding.
A cylinder that spins freely round and round is neat, it's fun, but it's not needed for proper function. You have a gun that has been "slicked up" that does it, and one that has not been, that doesn't.
A cylinder that spins all the way around slowing to a stop as it does so is not a mechanical problem. Clearly there is more friction on it than on the cylinder of the other gun, but it doesn't interfere with normal operation, does it??
I was brought a gun once (Ruger SP101) where the cylinder would not spin at all. You could turn it, by hand but the drag would not let it free spin. That gun turned out to have a carbon build up inside the cylinder pin hole. The owner had never cleaned that part of the gun. Once cleaned it worked normally.
SO, clean the central hole in the cylinder like you would the barrel and chambers, solvent, brush, patches, etc. Once you are certain it is clean, that takes that factor off the list of possible causes.
Check the fit of the base pin through the cylinder. Look at the pin, itself, any roughness to the surface?? grooves, nicks, anything that makes it rough where it should be smooth??
Check the nickel finish. Nickel plating can add thickness to a part. Perhaps your gun was made with a tight fit, and the plated added just enough to prevent free spin round and round??
You could consider polishing the base pin, BUT remember if you remove metal you can screw up the gun. There is no adjustment, only hand fitting, & polishing to allow the cylinder to spin more freely than it currently does, and it is an individual thing.
What you want (cylinder spinning several revolutions before slowing and stopping) is a cosmetic thing, and not something the gun has to have, so tuning your gun to do that would be a trial and error matter.
Good Luck!