Problems with the Lynx card

In a previous version of the driver I had no problems with using WinMLS with the Lynx Two card. When I updated the driver I got problems. Find some screenshots of WinMLS and the Lynx mixer below that should explain the problem

Echoes in sound card impulse response shown in time data plot (dB as y-axis, time in milliseconds as x-axis)

Resulting frequency response.

Zoomed in on the impulse response in the figure below. The period is a little more than 2 milliseconds.

How to avoid this echo using the Lynx card?

The echo is because the signal on the sound card input is played on the sound card output after a delay of  apprx. 2 milliseconds (which is the delay of the AD + DA converters)

I used the following settings on the Lynx mixer

Play Mix B has to be turned on, else I get no sound.