Streaming Setup — When a Second PC Is Worth It and When It Isn't
Hardware encoders made single-PC streaming good enough for almost everyone. Here's where that breaks down.
The short answer
A single PC with a modern hardware encoder handles streaming for the large majority of creators, costing only a few per cent of game performance because the encoding runs on dedicated silicon rather than the graphics cores. A second PC is genuinely worthwhile only when streaming a game that saturates your hardware, when running complex production with many scenes and sources, or when streaming from a console.
Verified and last updated August 12, 2026.
- Time needed
- 12 min
- Difficulty
- Intermediate
- Read time
- 3 min
The two-PC streaming setup used to be necessary. Hardware encoders changed that, and a lot of advice has not caught up.
The single change that fixes most complaints
Use the hardware encoder, not x264. Hardware encoding runs on dedicated silicon separate from your graphics cores and costs a few per cent. Software x264 encoding runs on the CPU and competes directly with the game — that is where "streaming destroys my frame rate" comes from.
When a single PC is fine
Getting a single PC setup right
Select the hardware encoder in OBS 2 min
Output settings, advanced mode, encoder set to your GPU's hardware option rather than x264. This is the whole game for performance.
Cap your game's frame rate 5 min
An uncapped game consumes all available resources and leaves nothing for the encoder. Capping to a stable figure gives the encoder consistent headroom and improves both stream and game smoothness.
Set bitrate against your real upload capacity 10 min
Target roughly half your sustained upload. Streaming at the edge of capacity drops frames whenever anything else on the network transmits.
Keep the scene simple 10 min
Scene compositing is CPU work. Many browser sources, animated overlays and filters add up quickly, and they add up on the same CPU running the game.
Diagnosing dropped frames
These are two entirely different problems and treating one as the other wastes hours.
Frames dropped due to encoding lag — the encoder cannot keep up. Fix by switching to the hardware encoder, lowering the preset, or reducing output resolution.
Frames dropped due to network — your upload cannot sustain the bitrate. Fix by lowering the bitrate or fixing the connection.
The OBS log states which one is happening. Read it before changing anything.
When the second PC is genuinely right
Streaming from a console. No alternative.
Complex production. Many scenes, many sources, alerts, animated transitions. That is real CPU work and it belongs somewhere other than the gaming machine.
Games that saturate the machine. Simulation-heavy or CPU-bound titles where there is genuinely nothing left over.
If none of those apply, the second PC buys you very little for a large amount of money and desk space.
On resolution
Do not stream above 1080p unless you have elevated bitrate access. Platform bitrate limits mean higher resolutions spread the same data across more pixels, and 1440p at a constrained bitrate frequently looks worse in motion than 1080p at the same bitrate.
What works
What doesn't
Key takeaways
Frequently asked questions
How much performance does streaming actually cost on one PC?
With a modern hardware encoder, typically a few per cent, because the encoding happens on dedicated silicon separate from the graphics cores rendering your game. The cost people report as severe is almost always from using software x264 encoding, which runs on the CPU and competes directly with the game. Switching to the hardware encoder resolves most single-PC streaming complaints outright.
Is a second PC better quality?
Not inherently at the same bitrate, which is the point people miss. A two-PC setup lets you use CPU-based encoding at slow presets, which is marginally more efficient at very low bitrates, but at the bitrates most platforms allow the difference is small. The real benefit of a second PC is removing all production load from the gaming machine, not image quality.
Why is OBS dropping frames?
Two different symptoms with different causes. Dropped frames due to encoding lag means the encoder cannot keep up, which is fixed by using the hardware encoder or lowering the preset. Dropped frames due to network means your upload cannot sustain the bitrate, which is fixed by lowering the bitrate. The OBS log distinguishes them explicitly, and treating one as the other wastes hours.
What upload speed do I need?
Roughly double your intended bitrate as sustained upload capacity, so a 6000 kbps stream wants around 12 Mbps of reliable upload headroom. The doubling matters because upload speeds fluctuate and a stream running at the edge of capacity drops frames whenever anything else on the network transmits. Test sustained upload, not a single speed test result.
Should I stream at 1440p or 4K?
Almost certainly not. Platform bitrate limits mean a higher resolution is spread across more pixels at the same data rate, so 1440p at a constrained bitrate often looks worse in motion than 1080p at the same bitrate. Unless you have access to elevated bitrate limits, 1080p at 60 frames per second is the sensible ceiling.
About the author
PC Hardware & Performance Editor
Marcus has been building, breaking and repairing gaming PCs since 2011, first as a weekend favour for friends and then for eight years as a bench technician at an independent repair shop in Portland, where roughly a third of the job was diagnosing machines that "ran fine yesterday".
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