VMware Horizon Community
TimK2
Contributor
Contributor
‎10-03-2017 02:22 AM

Horizon Client 4.6 (Mac / OSX) dangerously unusable on 4K / HiDPI display

Horizon on a 4K / HiDPI screen performs incredibly poorly.

Upon moving the mouse, it can take up to 45 SECONDS for the on-screen mouse pointer to move to the correct position - and during that time, click events are delivered at the WRONG screen coordinates.

The behaviour described is identical to the concerns raised in this thread

I raise it here as a separate item because it appears to be directly relevant to using a 4K / HiDPI external display.

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kdenike
VMware Employee
VMware Employee
‎10-03-2017 11:44 AM

Can you please work with your Horizon administrator to open a bug with VMware? We would love to see logs and figure this out!

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TimK2
Contributor
Contributor
‎10-10-2017 07:50 AM

kdenike I cannot guarantee our administrators will explore this issue any further, so I'm going to hope that you can raise this internally.

1.  We can replicate the same behaviour using the WIndows Horizon Client, when connected to a 4K external monitor - but only when the desktop is in extended display mode.    Performance is improved by ensuring the laptop screen is disabled, and the 4K external display is the only dispay in operation.

2. This behaviour continues to occur on the Mac client, regardless of wether the desktop is extended or not.

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