JSAUX Upgraded Docking Station 4K@120Hz for Steam Deck OLED/ROG Ally X/Legion Go (S)/MSi Claw, 6-in-1 Steam Deck Dock with HDMI 2.1, Gigabit Ethernet, 3 USB 3.0, 100W Charge for Steam Deck LCD-HB0603

Nope it was this one. https://a.co/d/03E2fCjN And the steps take from the linked thread in the OP hasn’t not stopped the screen blanking. It seemed to reduce it but it is still happening.

It will be lower latency than SmartCast since you are bypassing the delay caused by software entirely. I've had good luck with this dock for both my phone and my handheld PC.

jsaux :) https://www.amazon.com/dp/B0B7HVZNMB?ref=ppx_pop_mob_ap_share