Hello There!
My machine has 2 Titan GPUs, when I first open Recorder I received a prompt option to set the number of GPU I checked both cards, but when I tried to open the scene in Studio it mentioned that the scene will be locked because I set 2 GPUs , My problem is I cannot find where to set back the Recorder to use single GPU to save my scene in normal way so I can export my animation.

Thanks in advance.

Hi
I suppose you have confused a bit, because GPU management is present only in Mocap Studio. To select used GPUs click menu Help > Manage GPUs.
Multiple GPUs feature is available only in Pro (former Standard) edition. However, you can try it in other editions, including the free trial. But projects that are tracked using this feature in trial mode are saved in iPiLocked format disallowing the animation export.

Thank you very much that's was really helpful, you guys at ipi soft are really professional and quick.