@ptemoche So, other than the first frame not filtering, is there a problem?
Also, we've noticed problems with the CUDA version of Altus that is run by default when you run "altus.exe". If you're still having problems, do you mind using the OpenCL version of Altus?
Doing so outside the GUI is a little involved: you'll need to go to C:\Innobright\Altus\bin\ and run opencl.exe with the command-line arguments you would have used for the GUI.
1.6.1 mistakenly was compiled against the CUDA 8 SDK, meaning you must have an NVIDIA driver 367.4x or later (just added this to our changelog/known issues document). We'll be releasing Altus 1.6.2 shortly to address this.
In 1.7, we're formally moving to the CUDA 8 SDK (possibly dropping it altogether), and making the OpenCL version default again.