There is no know problem with Space Shooter and any particular device. I would try standard trouble shooting (making sure the build is correct, etc), and if no problems are found, you can reports problem as me big report. The only thing to keep in mind is that tablets often have large amounts of screen space to fill and can be slower compared to a phone with a smaller screen size. Fill rate comes to mind. If you can get data, check to see if a similar project runs well on the phone but slowly on the tablet, then it could be the tablet. I have heard of tablets still under performing even with "stronger chipsets" because the graphics requirements on the tablets exceed the strength of the chips.