Apple Releases macOS Catalina 10.15.3 With Pro Display XDR Optimizations, Improvements to Multi-Stream Video Editing for 16-Inch MacBook Pro

[MacRumors]

Apple today released macOS Catalina 10.15.3, the third update to the macOS Catalina operating system that was released in October. macOS Catalina 10.15.3 comes over a month after the release of macOS Catalina 10.15.2.

??macOS Catalina?? 10.15.3 can be downloaded from the Mac App Store for free using the Update feature in the System Preferences app, and it is available to anyone who has a compatible Mac.

macOS Catalina 10.15.3 has code in it that suggests a new "Pro Mode" is coming to Apple's Macs. Pro Mode appears to be an optional setting that overrides fan speed limits and energy saving restrictions to improve performance. The code says that apps "may run faster" but battery life could decrease and fan noise could increase.

It's not entirely clear if Pro Mode is coming to Macs in the 10.15.3 release, but the code is there so it is a possibility. According to Apple's release notes, the update includes Pro Display XDR optimizations and multi-stream video editing improvements.

The macOS Catalina 10.15.3 update improves the stability, reliability and security of your Mac, and is recommended for all users.
This update:
- Optimizes gamma handling of low gray levels on Pro Display XDR for SDR workflows when using macOS
- Improves multi-stream video editing performance for HEVC and H.264 encoded 4K video on the 16-inch MacBook Pro (2019)

For more on everything that's new in ?macOS Catalina?, make sure to check out our dedicated macOS Catalina roundup.

Article Link: Apple Releases macOS Catalina 10.15.3 With Pro Display XDR Optimizations, Improvements to Multi-Stream Video Editing for 16-Inch MacBook Pro

 

[sugargliderdude]

i said i would install Catalina once its at 10.15.3 but still not sure if i should... hearing so many horror stories.

 

[e1me5]

So, “Pro mode” is only when running on battery? I guess that won’t fix the throttling on my 2018 i9.

 

[bsbeamer]

Sounds like this MIGHT have better AMD 5XXX drivers?
Will install on MBP16,1 later this week after I update the bootable clone.

 

[Konigi]

This is short. Hope it fixes more bugs than it lists. Usually it does, but...

 

[jb-net]

Biggest question: Will it fix Mail's data loss bug? Or is Mail.app on Catalina still randomly deleting E-Mails?

 

[Knightcastle]

Fingers crossed for Notes syncing with iCloud again.

 

[macintoshmac]

Biggest question: Will it fix Mail's data loss bug? Or is Mail.app on Catalina still randomly deleting E-Mails?

It was said to have been fixed in the third beta. If this build is the same or higher, the bug may be fixed. MR has stopped giving build numbers long back, so just wait for someone to provide you with a build number. I am downloading it, but did not bother to catch the build so can't tell you right now.

 

[pavvel]

Fingers crossed for Notes syncing with iCloud again.

Never had a problem with notes syncing since the first version.

 

[theapplehead]

Is the combo update available?

 

[DinkThifferent]

Is the combo update available?

When i open my mojave update center I get the download presented as 10.15.3.

or isn’t that what you meant?

 

[zone23]

My MacBook and a iMac downloaded the update and its just sitting there looking stupid.. says its downloaded but it just looks stuck.

 

[hagjohn]

I'm stuck at 2.14GB of 3.42GB - About 10 hours remaining

Is the combo update available?

I do not see it yet. https://support.apple.com/downloads/macos

 

[petitpiton]

It was said to have been fixed in the third beta. If this build is the same or higher, the bug may be fixed. MR has stopped giving build numbers long back, so just wait for someone to provide you with a build number. I am downloading it, but did not bother to catch the build so can't tell you right now.

19D76

 

[BWhaler]

Still won’t touch Catalina with a 50 foot pole.

For the first time ever, an Apple OS cannot be trusted and is worth the upgrade.

 

[posguy99]

So another three point releases to go before it *might* be considered needful to be installed.

 

[iTech23]

Anyone with the issue with the MacBook Pro 16-inch and external monitor connected causing the fans to go crazy, installed the update to see if the problem was fixed? Thanks!

 

[jphall]

Is the combo update available?

I found the page, but though it says 10.15.3 Combo, it is currently offering the 10.15.2 Combo. I imagine that'll be updated at some point as this would be quite early for them to be releasing the Combo- .2 Combo wasn't available until the next day as I recall.

Download macOS Catalina 10.15.3 Combo Update - Apple Support

The macOS Catalina 10.15.3 update improves the stability, reliability and performance of your Mac and is recommended for all users.

support.apple.com

 

[xnsys]

21 minutes in and the dreaded problem with SMB shares starts again...

 

[4sallypat]

Anyone with the issue with the MacBook Pro 16-inch and external monitor connected causing the fans to go crazy, installed the update to see if the problem was fixed? Thanks!

Which monitor have you connected that has the fans go wild ?

I use a 27" Apple Thunderbolt display thru a TB3 to TB2 dongle and works quietly and perfectly..

 

[xnsys]

Anyone with the issue with the MacBook Pro 16-inch and external monitor connected causing the fans to go crazy, installed the update to see if the problem was fixed? Thanks!

I've noticed some graphics card changes with the 15" MBPr that I have - seems very reluctant to switch to the Intel graphics card, and sticking with the high performance one, which is potentially going to cause the fans to run higher.

 

[iTech23]

Which monitor have you connected that has the fans go wild ?

I use a 27" Apple Thunderbolt display thru a TB3 to TB2 dongle and works quietly and perfectly..

Do you have a MacBook Pro 16-inch?
I have a Samsung 49-inch curved monitor connected to my Mac.
A lot of users are having the same issue:

https://discussions.apple.com/thread/250878229?answerId=252033218022&page=28

 

[Jeo_cz]

Anyone with the issue with the MacBook Pro 16-inch and external monitor connected causing the fans to go crazy, installed the update to see if the problem was fixed? Thanks!

You can solve it through http://tbswitcher.rugarciap.com

 

[mikeboss]

21 minutes in and the dreaded problem with SMB shares starts again...

View attachment 891076

try and set IPv6 to "Link-local only"

 

[iTech23]

You can solve it through http://tbswitcher.rugarciap.com

I have that and it doesn’t fix the issue, the problem is the with the GPU and that’s to disable the turbo boost of the CPU.