Curious mouse-flickering problem on MacBookPro, Unity editor

Has anyone ever seen “mouse flickering” – just as if you have bad video ram – when using the latest Unity on an ordinary MacBook Pro ?

We had a weird thing where a new MBP (apparently) had bad ram, so they completely swapped the motherboard.

Bizarrely the problem still is here! ie with the totally new motherboard/ram.

It does happen particularly with Unity, when Unity is running.

(TBC I mean simply the Unity Editor itself.)

Anyone seen this??!

Just in case anyone stumbles on this, it’s an obscure but well-known problem with MBPs of about 2015-2016 build.

Apple are actually unable to fix it which is quite funny … incredibly even changing the motherboard (includes all ram and video cards as a fixed unit) does not fix it!

Any app (such as Unity - even just Safari) which calls for the faster graphic card, can cause the woe.

The only workaround is to use something like this https://gfx.io to force use of only the slow card. (Using the built-in “turn off both card use” switch does NOT help, bizarrely.)

Hope this problem doesn’t strike you…