I have been struggling with an odd issue effecting openvpn on Windows 7 64-bit wireless. Performance is very sluggish and my ping latency is very high across the openvpn connection when compared to WinXP wireless and Win7 wired connections.
This appears to be an issue with the Intel WiFi Link 1000 BGN wireless card. How do I solve this issue?
If you go into Control Panel -> Power Options and click "Change plan settings" for your current power plan.
On the next screen click on "Change advanced power settings"
On the next screen expand "Wireless Adapter Settings" and then "Power Saving Mode"