My screen keeps blacking out for a few seconds
 

Since upgrading my Mac OS to Sonoma, I have regularly been getting screen blackouts. Every 5/10 mins, both my extended screens will go black for a few seconds and just come back on. This is really annoying and is making it a hassle working from home

Same issue - not a good look
 

Experiencing the same issue. Not a good look when presenting to clients. It's only happening with 1 of 2 monitors.

Given your description I would suggest reporting the issue to DisplayLink directly by following the process outlined here --> https://support.displaylink.com/know...to-displaylink

Could be hdmi cables, once you start pushing 4k 60hz+ sometimes low quality cables can cause these short blackouts because it's having trouble always receiving the data due to loss or interference