I have MacBook Pro 16 and bought TBT3-UDC3. Connect only Plugable power adapter and two monitors. First is 4k/60Hz LG 27" through DisplayPort. Second is 1080p/60Hz Philips 224E5 through HDMI.
LG working fine, but second monitor with 1080/60 is blinking after waking up.
If I change refresh rate to 50Hz temporary and return to default 60Hz, monitor work fine to next sleep cycle.
I have recorded video - https://youtu.be/wJ7-UzC4je4