@Ramalam Hi,
I'm working at Qualisys and just noticed that you are having problems with SteamVR Base Stations 2.0 and a Qualisys system. In our tests it has worked fine with Base Stations 2.0, without any interference. However, the older Base station 1.0 doesn't work with a Qualisys system, because of the IR interference. Can you please contact us at support@qualisys.com if you are still having issues.
Regards,
Johannes