Share screen lag

When I share screen during session, there's around 3-4 seconds lag between me and students. I use 27" iMac, OS X Sierra. No proxy or firewall. My internet speed is 10 Mbps download and 1 Mbps upload.
I didn't have this problem when using Sykpe (usually only half to 1 second lag).
Is there any setting to improve this?

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AshC

Hi Edy,
It's clear based on those results that you are either experiencing Network problems / delays, or your ISP is having some issues. I would first reach out to your IT department if on a company network. If at home, try bypassing any wireless connections by plugging directly into your LAN and test again.

Edy Hardjo

There are many numbers that are way over 300ms. Please advice further instruction. Thanks

Edy Hardjo

Hi, I run a trial meeting, 1 student, webcam off, using computer audio, share screen.
Here is the result:

p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px Menlo} p.p2 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px Menlo; min-height: 13.0px}

Traceroute has started...

traceroute to gwglobal.gotomeeting.com (216.115.208.197), 64 hops max, 72 byte packets

1 10.182.207.200 (10.182.207.200) 0.404 ms 0.192 ms 0.265 ms

2 10.103.64.1 (10.103.64.1) 1697.354 ms 1039.341 ms 929.934 ms

3 192.168.218.157 (192.168.218.157) 446.041 ms 232.389 ms 39.483 ms

4 192.168.215.174 (192.168.215.174) 30.919 ms 51.327 ms 35.711 ms

5 192.168.255.178 (192.168.255.178) 39.843 ms 24.169 ms 10.722 ms

6 lynx-static-116-68-230-102.lynx.net.id (116.68.230.102) 63.569 ms 47.457 ms 47.759 ms

7 snge-b1-link.telia.net (213.248.78.189) 30.622 ms 27.618 ms 35.310 ms

8 snge-b1-link.telia.net (62.115.135.168) 24.811 ms 44.358 ms 34.755 ms

9 sjo-b21-link.telia.net (62.115.124.26) 218.590 ms 269.865 ms 248.601 ms

10 palo-b22-link.telia.net (62.115.125.8) 411.572 ms 700.272 ms 941.522 ms

11 cogent-ic-309395-palo-b1.c.telia.net (62.115.34.74) 1706.204 ms 2365.364 ms 1380.809 ms

12 be2013.ccr41.sjc03.atlas.cogentco.com (154.54.5.105) 875.950 ms 392.081 ms 195.544 ms

13 be3142.ccr21.sjc01.atlas.cogentco.com (154.54.1.193) 198.302 ms 189.201 ms 200.020 ms

14 be3176.ccr21.lax01.atlas.cogentco.com (154.54.31.189) 208.890 ms 198.054 ms 194.054 ms

15 be2536.rcr21.las02.atlas.cogentco.com (154.54.82.26) 223.790 ms 214.177 ms 217.698 ms

16 be2205.nr21.b023583-0.las02.atlas.cogentco.com (154.24.48.190) 226.337 ms 233.626 ms 326.012 ms

17 38.122.78.114 (38.122.78.114) 463.993 ms 740.002 ms 647.950 ms

18 173.199.61.12 (173.199.61.12) 690.143 ms 654.750 ms 678.275 ms

19 173.199.61.0 (173.199.61.0) 711.406 ms 835.802 ms 786.989 ms

20 173.199.62.228 (173.199.62.228) 839.639 ms 962.963 ms 1262.322 ms

21 173.199.63.7 (173.199.63.7) 279.837 ms 261.362 ms 270.805 ms

22 go2meeting.mobi (216.115.208.197) 258.208 ms 265.034 ms 267.037 ms

AshC

You might try running a trace route from your Mac to 'egwglobal.gotomeeting.com' during a test meeting:

Launch Network Utility
Click Traceroute
Enter the domain name for which you want to perform a traceroute
Click Trace

Look for any stars (possible packet loss) or times over 300 ms.

Edy Hardjo

Hi Ash, thank you for the prompt reply. I use cable connection through router. I already disable webcam and switch to phone, but lagging still the same, it didn't improve any.

AshC

Hi Edy,
If you are connected to a Wifi router, I would suggest bypassing the wireless for a direct connection to the LAN, and then test the broadcast again.

Off hand, 1 Mb/s upload time can sometimes get you in trouble if you're sharing your webcam, desktop and VoIP. So to minimize this demand, I would also suggest switching to telephone, and stop webcam sharing to see if the screen sharing improves.

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