Wifes laptop speed seemed fine for quite a while but had gotten very sluggish lately. Did a google search and found that there are lots of default things enabled that are totally useless (IMHO). Turned off things and it made a huge improvement in responsiveness. It was mainly to disable programs that automatically start up and disable graphics effects. Many here probably know about these things but thought I would post here as it made a big difference. There are a number of sites that detail these - here is one:
https://www.tomsguide.com/how-to/how-to-speed-up-windows-10
https://www.tomsguide.com/how-to/how-to-speed-up-windows-10