All I wanna do is run a headless Mac Pro(3,1, with @dosdude1 patch for Mojave). The instant I connect, mouse/keyboard latency becomes intolerably slow, on the Mac Pro itself, whether I'm looking at it through the two MacBooks I tried this with, or sitting in front of the Mac Pro (display temporarily attached for testing). WindowServer spikes to over 50% just sitting there in Activity Monitor, on the target Mac Pro. If I move a window around, it exceeds 100%.
And not just Screen Sharing and Apple Remote Desktop; I get this using ConnectWise Control Client also (it's kinda like TeamViewer). As soon as I disconnect, latency vanishes on the Mac Pro and I can wave a window around smoothly and fast.
Info follows, and after that a list of things-I-tried.
To be clear, I'm testing with a monitor attached. The problem persists on the remote end when monitor is unplugged.
MacPro3,1 ("Mac Pro (Early 2008)") 2 * 2.8 GHz Quad-Core Intel Xeon (8 cores total)
Memory: 16 GB
Boot ROM Version: MP31.006C.B05 SMC Version (system): 1.25f4
NVIDIA GeForce GT 120 512MB running 1920 x 1080 24-Bit Color
Mojave macOS 10.14.6 (18G9323) via DosDude patch.
Things I tried/notes.
With 800*600 rez (unacceptably small) the problem isn't as bad. Several restarts, reset SMC and nvram, force-quit WindowServer, turned off firewall and little snitch, direct Ethernet connection via Cat5e bypassing router, trashed all Google services and apps, turned off all accessibility features; turned off "Displays have separate spaces" and logged out and back in.
And not just Screen Sharing and Apple Remote Desktop; I get this using ConnectWise Control Client also (it's kinda like TeamViewer). As soon as I disconnect, latency vanishes on the Mac Pro and I can wave a window around smoothly and fast.
Info follows, and after that a list of things-I-tried.
To be clear, I'm testing with a monitor attached. The problem persists on the remote end when monitor is unplugged.
MacPro3,1 ("Mac Pro (Early 2008)") 2 * 2.8 GHz Quad-Core Intel Xeon (8 cores total)
Memory: 16 GB
Boot ROM Version: MP31.006C.B05 SMC Version (system): 1.25f4
NVIDIA GeForce GT 120 512MB running 1920 x 1080 24-Bit Color
Mojave macOS 10.14.6 (18G9323) via DosDude patch.
Things I tried/notes.
With 800*600 rez (unacceptably small) the problem isn't as bad. Several restarts, reset SMC and nvram, force-quit WindowServer, turned off firewall and little snitch, direct Ethernet connection via Cat5e bypassing router, trashed all Google services and apps, turned off all accessibility features; turned off "Displays have separate spaces" and logged out and back in.
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