Macbook Pro 13 2015 becomes unbearably slow after a few weeks of use no matter the MacOS version

Hey,

I have a problem with the installations or maybe something else with my Mac. I used OCLP to install Sonoma as well as Ventura. Both operating systems run absolutely flawlessly at first, but after a few days/weeks of usage the Mac will become extremely slow for no apparent reason.

I have the I5/16GB/512GB SSD version, so hardware wise it should not be a problem I guess, especially, since my CPU and RAM are basically not utilized. After my latest installation of Sonoma 14.7 i think it ran stable for like 3 weeks now. I was just working on the device completely fine yesterday, but when I tried to use it again today, it once again became slow and laggy.

Since I am no Mac user outside of this MBP and therefore only have limited knowledge about the OS and the device, does anyone have an idea what could cause this? It happened to me 3 times now.

Author: @Avarent