Cubase 9.5 Which Mac OS?

I purchased Cubase Artist 9.5. Which OS is best for it? El Capitan or Sierra? I will be using a 5,1 Mac Pro.

C9.5 High Sierra here.
Everything runs super smooth.

I don’t know if I should put High Sierra on this Mac Pro. What advantage would there be over El Capitan and Sierra?

Check out this compatibility chart.
Mac OS Compatibility Guide by Mac Model.

Yours is still a fair question.
So many variables: matched RAM, updated drivers, a clean install of your chosen OS if other required software is known to install without issues vs. an OS update.

High Sierra running smoothly with C9.5 on a 2012 Mini and 2017 MBP.

I’m having trouble deciding whether to install El Capitan or Sierra. Other that Siri I can’t tell a difference between the two.

I have a 5.1 with El Cap and it runs smooth.

Cubase 9.5 runs perfectly fine here on high sierra, mac pro mid 2012.

You don’t say which Mac you have.

I ran Cubase on El C for ages on the studio Mac Pro because of the reported slow GUI issues pre- C9.5 with Sierra, but found the timeline a bit sticky compared with C9.

I was going to go to High Sierra but this required a Firmware update for my machine which I wasn’t keen to do in case it broke something, so tried Sierra and it’s been a dream with C9.5, very smooth and fast, much better than recent versions of C8/C9 on El C.

For what its worth, YMMV

I have a 4,1 flashed to 5,1.
Very glad to hear Sierra is working well for you. Sounds like it will work well on either El Capitan or Sierra. I guess I’ll flip a coin.

If you have C9.5, I recommend Sierra. It is much smoother than El C.

Cubase 9.5 here, running smoothly on Sierra on an iMac 17.1.

I bought 8.5 then got the free upgrade.
I’ll use Sierra.
Thanks everyone.