You're very welcome.
Apologies if you know all about this already, but something else you can look at is your temperatures:
http://wpitchoune.net/psensor/
Modern CPUs will boost to higher clock speeds if they are kept cool enough. Conversely, if they are too hot they will thermal throttle and reduce their clock speeds and lower the overall performance of the PC or laptop.
Laptops have very compact coolers and are at a dissadvantage when compared to desktop PCs to start with, they are also prone to getting full of dust and fluff, which chokes off the airflow and makes then run hotter.
It your laptop is not too bad you could just give it a quick blast through the case vents with an air duster:
https://www.amazon.co.uk/s?k=air+duster&i=office-products&ref=nb_sb_noss. However, if it's really dirty and full of fluff and dust, you may want to open it up and clean it out more thoroughly with a brush, a small paint prush is ideal, and an air duster: