SonicWall TZ200 slow performance VPN Access with Netextender V3.5.108

[rhormigo]

We have what I feel is a quite slow VPN connection using Netextender on a TZ200. At least slow compared with our old cheap Linksys RV042.
At home, using a computer with XP SP3, netextender can do up to 256Kbps Down and 100Kbps Up when connecting to the office. Still from home, using a new brand computer with Windows 7 64, netextender will perform up to 1.1 Mbps Down and up.
My home Internet performs about 13Mbps Down and 2.5Mbps up, the office is 60Mbps Down and 15Mbps up.
I use to do over 10 times faster with a Linksys cheap router in PPTP mode, so I am wondering if we are doing something wrong here or really is there performance issue with the SW Netextender. Can you please report performance experience? It is a problem for us since we are transferring big files or making remote desktop over big screens quite often and this is insane slow now.
One interesting note is that when Netextender is connected there is a new network connection shown on the XP task-manager. This connection reports to be connected at top 64kbps even if the speed in reality is faster. In the W7 machine this net start as 64kbps, but after a while transferring a big file automatically switches to top 1Mbps that would be more accurate. The old cheappy Linksys did the same but the link was always established at 10Mbps top.

Thanks.

 

[joepc]

That sounds odd. Are you the only person with the issue?

I would also make sure you have the latest firmware on the firewall. There is a ver 4 of NetExtender but I'm not sure if that is available on the firewall's yet.

You could also try the Global VPN client.

 

[rhormigo]

As I advanced, we have 3.5.108 that appears to be the last update. Our IT team has been in contact with SW on this and they already tried the last firmware, etc... Also there were some issues making work the other Global VPN client, so we could not test that one. The issue happens similarly from my house and from other places and users with consistent results. I used my house as reference because we had the older smaller linksys VPN access working.
Do you have some stats on SW VPN access with netextender, real file transfering over specific internet connections? I am just trying to figure out if this is us (office network) or more people is having this trouble, so we can decide to replace this box if doesn't work properly, we just lost months on it. Since the older cheaper routers were working ok, it is a good chance that the problem is the box/software or related config itself.