Sometimes clearing browser history cache is important, this will eliminate old stored data from your PC and improve browsing performance…
https://www.digitaltrends.com/computing/how-to-clear-your-browser-cache/
Reducing amount of bandwidth download/upload speed as bc22 mentioned are also very helpful…
This will reduce amount of CPU being used...
Also clearing DNS cache is also important...
example: DNS server overload in the case of a high number of visitors. Error messages like “DNS Server Not Responding” are a common and despised consequence.
Some helpful link I included below [related to browsing behavior]…
https://www.ionos.com/digitalguide/server/configuration/flush-dns/#:~:text=For%20this%20reason%2C%20operating%20systems,valid%20for%20a%20given%20time.
https://www.noip.com/support/knowledgebase/how-do-i-flush-my-windows-dns-cache/
https://www.a2hosting.com/kb/getting-started-guide/internet-and-networking/clearing-the-dns-cache-on-your-computer