Extremely slow response on Samsung Tab 3 10.1

Would you mind sharing a screenshot of what your dashboard looks like while in edit mode?

The most common culprit we’ve seen is having a large number of individual spacer tiles rather than fewer large spacer tiles - especially when used with a smaller base tile size. On modern devices, you might not even notice the difference at all, but on a 7+ year old device it certainly becomes a noticeable factor.

Edit: Here’s a few links to similar threads about slow performance on old devices. In both cases, a large number of small spacer tiles was a key contributing factor to the slow performance.