I just got my Mac back from repair (I will be sending it back because it’s noticeably louder. I’ll post a thread in the MacBook Pro forum later). But i noticed after doing the time machine restore (not from recovery screen).. my Mac is noticeably snappier than before.. it got me thinking, it’s not the computer itself, but Mojave. Delta update after delta update after delta update definitely CAN slow down your system.. I feel that Apple should give us the option to install the combo update or the delta update under system preferences or wherever the update section is.