Does anyone know what the best server settings are? For example, does "Poll full Screen (ultra fast)" conflict with "poll foreground window"?
Apparently, it's possible to select both. Also SystemHokk.dll and DDEngine. Should I select one or both. What are the best settings? I can't find any documentation on this.
After more 2 000 000 (two million) views on forum for 1.5.0.x development versions... and 1.6.1.0, 1.6.3.0-dev versions
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Feedback is always welcome
2025-12-05: Celebrating the 23th anniversary of the UltraVNC (26th anniversary since the laying of the foundation stone): https://forum.uvnc.com/viewtopic.php?t=38130
2025-12-03: Could you please complete our poll/survey? Renaming UltraVNC files and service to be more clear: https://forum.uvnc.com/viewtopic.php?t=38128
There was a problem to vote, it is solved now! Thanks in advance!
2025-12-02: We need help: English Wikipedia UltraVNC page has been requested to deletion: https://forum.uvnc.com/viewtopic.php?t=38127
Any help is welcome to improve the UltraVNC page and/or to comment on the Wikipedia Talk page
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2023-09-21: Important: Please update to latest version before to create a reply, a topic or an issue: https://forum.uvnc.com/viewtopic.php?t=37864
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Fastest Server Settings
- Rudi De Vos
- Admin & Developer

- Posts: 6986
- Joined: 2004-04-23 10:21
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Re: Fastest Server Settings
There is no fastest setting.
Capture method: ddengine -> know that changed screen parts
When ddengine fail systemhook -> give hints on changed screen parts (slower)
Encoder:
Bandwidth vs CPU needed to compress.
On a 1GB network video compressor unless you don't like the jpeg artifacts
On WAn with slow networks using heavy compression
speed depend on: data send time + time compress/decompress
If you have a slow network, using more compression can result in a higher speed as less data nee to be send
Capture method: ddengine -> know that changed screen parts
When ddengine fail systemhook -> give hints on changed screen parts (slower)
Encoder:
Bandwidth vs CPU needed to compress.
On a 1GB network video compressor unless you don't like the jpeg artifacts
On WAn with slow networks using heavy compression
speed depend on: data send time + time compress/decompress
If you have a slow network, using more compression can result in a higher speed as less data nee to be send
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