Macbook Pro External Display Flickering Issues
As many others have reported, the external monitor (in my case, BenQ PD32OU), constantly loses/regains signal whenever connected to the MacBook Pro (15" 2017 (Radeon Pro 560 4 GB, Intel HD Graphics 630 1536 MB)) via a USB-C <-> HDMI cable. "Flickering" is an understatement.
It's not the cable. I've tried many of them.
I know Apple doesn't care about a 2017 computer anymore, but I'm sort of shocked they never fixed this issue.
I post this to let others know that there is no solution; EXCEPT to use a different connection type. In my case, the monitor accepts Thunderbolt 3, so Thunderbolt 3 <-> Thunderbolt 3.
MacBook Pro 15″, macOS 10.14