Question: Restoring from a Time Machine Backup
I have a MacBook which is rather old now and with all the updates over time has become very slow. I am intending to clear the hard disk and reinstall a clean version of High Sierra..
My first question is would this improve how quickly it runs.? Im not bothered about using hungry applications just power on, internet, emal and office applications..
Secondly, I run regular backups to the Time Machine so my intention is to restore my Mac from that once the clean OS is installed.. Will this take me back to square one and slow my Mac down straight away with the accumulated junk that will be on the image..?
Appologies if the above are rather baisc obviouse questions but I've never done this on a Mac or had to use the Time Machine Backups before so would appreciate any suggetions on the best way of cleaning up my Mac so it starts in less than 5mins...!! Ideally without spend cash on 3rd party software that is on sale..
MacBook Pro, macOS High Sierra (10.13.2)