Did you check command line

powercfg -list

Check which is the actual setting. Usually by default it is balanced, but first thing I do with any machine I get my hands on is to set it to high performance.

>By now, the following has been collected as far as the issue of slow performance of my laptop after a while.
>
>1. The disk is SSD, so defrag does not apply.
>2. TRIM is ON in the system.
>3. Samsung SSD Magician software cannot run as it reports incompatibility or something like that.
>4. When it happens, CPU is normal, memory is normal, disk is normal
>
>Symtoms are like this.
>
>1. Word takes about 4 times slower to start.
>2. Any click in the browser is slower than average.
>3. Windows update takes longer, usually only updating Defender, would be slower as well
>4. Starting Outlook is slower as well
>
>The only way to make things normal again is a restart.