A low mac can depend on a lot of different things. Here is a list of things to try out:
- Change to Solid State Drive (SSD)
- Boost RAM
- Cleaner apps:
- appcleaner
App Cleaner & Uninstaller
App Cleaner & Uninstaller by nektony
Onyx
OnyX maintenance and optimization tool is available as a free download from the Titanium Software website.
Cleanmymac
Cleanmymac by macpaw is perhaps the most widely used mac cleaner