Windows 10 high CPU usage problems

In the past a few weeks, my 4-year old Thinkpad X1 started to have very high CPU use with the cooling fan running very nosise. I have been keeping it on or in sleep mode. Restarting it does fixed the problem for a short period of time but it will go back to the same problem. The Task manager shows that two process: Cisco WebEx took 50+% of the CPU usage and WMI Host service took up about 25% constantly. First, I manually stopped the WebEx but it came back in a few hours. I have been using WebEx for years as the main video conference service up till early 2020 when Teams and Zoom took over. We even stopped renew its license this year. Guess Cisco really dropped the ball this time. I only used it less than a handful of times this year, considering having 10+ video meetings every work day. Anyway, decided to uninstalled it for now. Can always reinstall hwen needed. That took care of the 50% of the CPU usage. The WMI Host Service or Windows Management Instruments Service is an essential service for Windows. Even stopping it would be a problem. Based on the advice here: https://appuals.com/wmi-provider-host-wmiprvse-exe-high-cpu-usage-on-windows-10/ the problem can be solved by manually restarted from Services. I did and it was gone. Not bad. Maybe can still use the laptop for some time before considering a new one.