Vanilla vs Paper

Hi. I’m running Vanilla server for few friends. Vanilla is laggy, so we decided to test out Paper. So my question is: Is Paper different than vanilla in things like spawn chunks, redstone mechanics and dupes? I know that Spigot kind of breaks things like that, but also makes TPS more stable.

Both Spigot & Paper do not, in any way, break redstone mechanics.
Yes, they both perform better than plain vanilla, and you can customize all settings in the spigot.yml file, such as tick speed, mob spawn caps/rates… ect. I highly suggest, if you have the self-control to not use plugins. (if you want to keep it pure vanilla) that you upgrade to either Spigot or Paper.