Sadly, I have looked all over the place, and the only choice for gaming is still the nvidia solution, though, it still has lots of issues, besides the battery issue that was talked about above (and the real PITA way of doing a replacement battery), it also suffers from wifi issues / poor performance, screen brightness issues, touch input is inaccurate, cracked corners, and other issues as well. If you are looking at this, I highly suggest you buy it from a place where you can return it easily.
Most other tablets I have looked at either had pathetic resolution, horrible GPU performance, or crappy CPU performance, or crap for RAM and or lacks external storage (card slots), so, basically, I have found nothing that I would be happy with.
I have returned 4 units this year and the whole experience was shocking to say the least, I have never return so much tech before, luckily, the stores I shopped at said, their number one returns are with tablets, so, I am not alone in returning these crap tablets.
Pretty pathetic that we are almost at 2017, and the android (and apple) tablet market is still in sad shape.