Connecting monitor in Thunderbolt mode causes significant mouse stutter

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n4s33r Author

Level 1

4 points

Connecting monitor in Thunderbolt mode causes significant mouse stutter

Setup:

Macbook Pro 15" 2018

Asus ProArt 32 PA32UC connected via Thunderbolt

Wired mouse connected directly to the Type c port on the mac with an A to C converter

When the display is connected via Thunderbolt - the mouse stutters significantly -there is a lot of jank!

When the display is connected via DisplayPort (via Type C on Mac to DP 1.2 on the monitor) there is no stutter at all.

Seems like a hardware/driver bug.

MacBook Pro 15”, macOS 10.14

Posted on Jul 12, 2019 11:48 AM

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Answer 1

Top-ranking reply

BDAqua

Level 10

245,567 points

Jul 12, 2019 12:45 PM in response to n4s33r

EtreCheck is a simple little app to display the important details of your system configuration and allow you to copy that information to the Clipboard. It is meant to be used with Apple Support Communities to help people help you with your Mac.

http://www.etresoft.com/etrecheck

Pastebin is a good place to paste the whole report...

https://pastebin.com/

Workable but harder for me to work with...the Note tool on the bottom of this editor's toolbar, as shown in the image, to copy and paste the output from EtreCheck.

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Answer 2

Old Toad

Level 10

210,795 points

Jul 12, 2019 2:43 PM in response to n4s33r

Try resetting the SMC: How to reset the System Management Controller (SMC) on your Mac

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Answer 3

n4s33r Author

Level 1

4 points

Jul 15, 2019 10:03 AM in response to BDAqua

yeah - that's all that was there. Are you suspecting high RAM usage? Doesn't explain that the stutter goes away when I switch to DP on the fly - RAM used doesn't change as far as I know, but I'll monitor it a bit more.

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