Displayport screens keep going blank & keyboard repeating issue

[AlbanRampon]

Hi Aaron,
I'm passing by and see your post. Several things here.

1. When the screen goes blank for a couple of seconds, does the screen content move back to the laptop display?
Do you only have a blink or is the USB device effectively temporarily disappearing is what this helps understanding. That tells if the issue on the monitor link, or higher in the chain.

2. You're talking about the Plugable and an unbranded one, can you get the hardware id from device manager? Do you know if it's DisplayLink as you also mention updating your Thunderbolt drivers?

3. Keyboard. DisplayLink chip or software has zero visibility or control of your keyboard traffic. Do you have the pause in typing also when typing on the laptop display? If so, you would be most likely experiencing USB communication troubles, explaining why the screen also drops: if the channel doesn't work, anything on it will be affected.

The next step is really the logs as Aga hinted...

Kind regards,
Alban