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What's the best macOS for 2015 Macbook Pro?

R

robert1998

macrumors 6502a
Original poster
Hello guys! I'm running the latest macOS 10.14.5 but it is very slow on my early 13inch Macbook Pro 2015. What is the fastest macOS?
 
I have that same MacBook Pro it runs fine on the latest OS. You system might feel slow for a number of reasons (low memory, low disk space). What do you use your computer to do?
 
It's not the OS that makes your computer slow. Your computer is probably slow because it contains a spinning mechanical hard drive. Replace that with an SSD and you'll find the difference night and day.
 
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chabig said:
It's not the OS that makes your computer slow. Your computer is probably slow because it contains a spinning mechanical hard drive. Replace that with an SSD and you'll find the difference night and day.
Click to expand...

They do have an SSD, it's a 2015 🙂

OP: try restarting with the option "reopen windows when logging back in" unchecked. Can you also confirm how much free disk space you have?
 
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My 2015 MBPro is still doing fine on El Capitan, and because it does so well, I have no intentions of upgrading it for the foreseeable future.

However, I keep a second partition with Low Sierra on it, and the MBPro boots and runs fine from that, too.
 
Absolutely, if you don't have enough free space, that can directly affect the performance of your MBPro.
A 128 GB boot drive does NOT leave you with much space already, and really easy for a variety of reasons to fill to capacity. In my experience, and with a small SSD like you have, less than 10% free space will easily cause noticeable slow-downs, without a doubt.
 
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