My MacBook Air (2020, 13-inch, macOS Sonoma) runs slower and slower after I start it up for several hours.
The sluggish Mac slows down my work. How can I boost it? I’ve already deleted the useless files on my Mac. The issue persists.
How many files did you clean up? The performance of a Mac is related not only to disk storage but also to memory.
The effect of manually cleaning a Mac is often negligible, as the Mac continues working and eating up memory and disk storage.
I recommend using a professional Mac cleaner - iBoysoft Cleaner.
I’ve used this tool for several months, as cleaning a Mac is a long-term job. This tool helps scan junk files, large files, app leftovers, duplicate files, and similar photos for one-click deletion.
Besides, it lets you release memory with one click. Every time after my Mac becomes slow, I refresh the memory to quickly accelerate it.
Yeah, that’s pretty normal on a 2020 MacBook Air. It slows down after a few hours, mainly due to RAM pressure + heat.
Quick fixes:
- Restart → fastest way to clear memory
- Check Activity Monitor → quit apps using high CPU/RAM
- Reduce browser load → too many Chrome tabs = major slowdown