Old PC which had Win10, core I3 CPU and only 4GB RAM was (unsurprisingly) slow and laggy, as an experiment I installed #LinuxMint on it with lightweight #XFCE desktop.
It is a fair bit more usable now (still slightly laggy probably due to me transferring my entire camera roll from Dropbox which is currently hammering all the resources) - definitely has potential as a backup PC in the office for light admin tasks, it could handle MS365 web apps (which alas, get used a lot here as well as Sharepoint) - (even the network printer worked "out of the box" via CUPS!)
[This toot is direct from the PC via #firefox