Where did you buy your Viewsonic VG2781 5k from??
Also is it DisplayPort 1.2 or 1.4?
sorry, I've just saw your message. I bought it in china, using russian service "cdek" (I from russia).
And I don't use DisplayPort.. only usb-c for my MacBook.
After 6 months of using Viewsonic VG2781 5k can say that it's great display. No problems at all.
Here's a little report:
USB hub working well (can compare with Xiaomi 4k display, where I had problems with hub every day):
- main usb-c port using with MacBook Pro 14
- second usb-c use for charging iPhone (really 15w output)
- one usb-a use for audio device
- second usb-a use for charging apple mouse, apple keyboard and other (about 5w)
- I have third empty usb-a port (great!)
And I can charge all this devices at same time, no problems with display power.
Anti-glare is top for me. I don't like matte displays, but Viewsonic has special film and it looks great. Like glossy and like matte at same time. Text clarity is well too. I hadn't any inconveniences on summer (working near the big window).
Speakers only for zoom/YouTube.
Black color is black (for IPS), better than on my old iMac 5k 2017. Glow effect is well too (like on Mac displays)
Ah, the speed of turning on after sleep the MacBook with Viewsonic is like iMac 5k 2017.