Cursor Lag and Half-Duplex Wi-Fi: Why Second Monitors on a Network Are a Technical Nightmare
The discussion centered on technical workarounds for using a secondary PC as a true, low-latency extension monitor over a network. Key solutions mentioned included virtual display creation using Sunshine/Moonlight, alongside specialized tools like Deskflow and Apollo.
Commenters are sharply divided on feasibility. Mordikan pointed toward input sharing tools like Deskflow, while LiveLM proposed the Sunshine/Moonlight stack. However, Cyber slammed the entire premise, stating standard Wi-Fi is inherently half-duplex and cannot match wired performance. Meanwhile, thingsiplay raised a massive red flag regarding Nvidia GeForce Now, claiming streaming activity enables comprehensive user data harvesting for AI training.
The clear consensus is that reliably achieving perfect, low-latency cursor movement over networking is fundamentally difficult, regardless of the software used. The core fault line exists between those who embrace complex streaming stacks (like maxwellfire detailing Wolf) and those who see the physical limitations of Wi-Fi or the privacy risks inherent in streaming platforms.
Key Points
Standard Wi-Fi networking fundamentally limits performance for high-bandwidth tasks.
Cyber warned that Wi-Fi is half-duplex, which is a major technical roadblock compared to physical cables.
Specialized streaming tools are being proposed to bridge the gap.
Suggestions included Sunshine/Moonlight (LiveLM) and Apollo (Bryan065), alongside Wolf for controlled virtual desktops (maxwellfire).
Cloud streaming services pose severe privacy risks.
thingsiplay argued that Nvidia GeForce Now allows companies to harvest comprehensive user data, including keystrokes, for AI training.
Input sharing solutions are available for adjacent, non-extension workflows.
Mordikan suggested alternatives like Deskflow for general input device sharing, rather than monitor extension.
The underlying operating system architecture affects performance viability.
DarkMetatron argued X11 is superior for this client/server setup, while the discussion overall favors networking over direct physical links.
Source Discussions (3)
This report was synthesized from the following Lemmy discussions, ranked by community score.