Shouldn't, but does. A reinstall after 6 months or so pretty much always makes the OS much more snappy. Don't believe me? It's a pretty easy experiment. Install your OS, use it regularly for 6 months, do a fresh install of the OS, and proceed to be amazed by how much faster the fresh install is than the 6 month old install.
It's been a long while since I've noticed a new install being faster. Back in the late 90s, yes. Now, just keep the PC free of crapware, and don't upgrade drivers and such at the drop of a hat. I notice hardware upgrades, and even CPU OCing, but not new OS installs, which to me are mostly annoying, and no way are they worth doing every six months.
If you need snappy, disable superfetch and search indexing (including disabling it for the drive, not just disabling the service--of course, if you use search all the time, and have a mechanical drive, you'll just have to live with it), keep enough RAM free (7.5GB on a cold boot, FI), disable the page file, and maybe get a SSD.