Try these 3 things:
1- Disable all motion/gestures
2-delete/disable facebook messenger app
3-clear cache/data for touchwiz home apps by going to, Settings>App Manager>All>Touchwiz Home and TouchWiz easy Home
4-Clear Cache partition on phone by;
-Power off phone, once phone is completely powered off, hold Up volume+Home+Power buttons till the little androind pops
-Scroll down to where it sais "Clear Cache Partion" and select that by pressing the power button, once you click on this and the cache is cleared screen will highlight Reboot system, select then and you are all set.
-tTese are all the steps i took and the Touchwiz Home no longer crashes
I hope this helps!