Yup, have to confirm. It is possible you experience a slight improvement compared to a single graphics card, but nowhere near anything like twice as good performance or anything.
For a real-time rendering software not relying on pre-baking lights or anything like that it is extremely difficult to manage VRAM properly on two graphics cards. We have this feature filed as feature request, though, so I have added your remarks as votes.
Hi, i just found this post and its a year old. im planning to build a workstation now, any updates on this feature of enscape utilizing multiple GPU's?