Hello I have been avid user of UVNC SC for many years. It worked really good with XP, and have tried version after version after version to get it stable and acceptable with Vista, Win7 and now Win8. Since Vista we never seem to get it working very fast.
I am wondering if having our own repeater running would make a difference in the speed. Every thing connect okay, and work good until that UAC promp comes up. (How logmein get around this I dunno) . It seems most of the times in the peak of the business day that SC just drags.... sometimes 10 or 15 seconds between screen updates because it just seems to be timing out, the work okay for a few clicks, then you have to wait again for the screen to refresh and hitting manual refresh does not work.
Could the shared default shared repeater, (probably shared by thousand users, and located on the other side of the world from me be the cause of this delay?
I am hoping a local repeater could help me better service my local users when they click on my website to use the SC VNC.
Thank you very much for your reply.
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A new stable version, UltraVNC 1.6.4.0 and UltraVNC SC 1.6.4.0 have been released: https://forum.uvnc.com/viewtopic.php?t=38095
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
2025-05-06: Forum password change request: https://forum.uvnc.com/viewtopic.php?t=38078
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
Development: UltraVNC development is always here... Any help is welcome
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SC and Local Repeater Use - Will help speed?
- Rudi De Vos
- Admin & Developer

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Re: SC and Local Repeater Use - Will help speed?
Are you using a repeater ? SC can make a direct connection.
If not, adding a repeater gonna make it slower.
If you are using some ( long distance) repeater having your own will make it faster.
The SC version doesn't work with UAC, UAC can only handled by an application running as service.
The full winvnc support UAC.
If not, adding a repeater gonna make it slower.
If you are using some ( long distance) repeater having your own will make it faster.
The SC version doesn't work with UAC, UAC can only handled by an application running as service.
The full winvnc support UAC.
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Re: SC and Local Repeater Use - Will help speed?
Thank you so much for the fast reply. We just upgraded to 1.1.8.0 on the desktops, and configured a 2011 SC and hopefully this "lagging response" issue will be resolved for us. Can you think of what else might cause the screen refresh to take so long sometimes?
- Rudi De Vos
- Admin & Developer

- Posts: 6986
- Joined: 2004-04-23 10:21
- Contact:
Re: SC and Local Repeater Use - Will help speed?
A 2011 version wil make a difference, as it use a different capture engine for win7
That version was made before the 1.1.8 updates and tested with the previous 1.0.9.2 viewer.
1.1.8 should be backward compatible...
That version was made before the 1.1.8 updates and tested with the previous 1.0.9.2 viewer.
1.1.8 should be backward compatible...
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