So had a chance to further test ipad mini and samsung galaxy tab 4.The mini I bought was supposed to be a
mini 2 according to ebay seller but wasnt.
Flew for about 15 minutes or so with the ipad,worked great,didnt seem to be any lag at all.
Samsung did have a slight lag but worked fine.I was flying in bright sun but sitting under a shade tree.I was only flying about 100 -150 yards away from home point.
I could see the ipad screen better than the samsung but I didnt try adjusting the brightness settings in either of them.
Whats surprising to me is that the ipad mini works so well.It's only an a5 processor with 512 mb of ram,it didnt even make the cut on this list.And I've seen some people in this thread say the ipad
mini 2 didnt even work for them,so I dont understand how some tablets work for some people and some dont.