@kimden5 , Dennis, Use the informative links below, to get tips and tricks info. on speeding up your device. Good luck.
I hope this helped you out, if so let me know by pressing the helpful button.
https://www.youtube.com/watch?v=B22FuJGRboc
http://www.tomsguide.com/forum/id-2050055/sisters-galaxy-tab-slow-make-faster.html
http://forums.androidcentral.com/general-help-how/368979-my-samsung-galaxy-tab-3-too-slow.html
https://www.youtube.com/watch?v=C3TAdLyUr3U