What rEVOLVE and Swade8 said above is precisely true. I had the EXACT same issue with my Gear 1 AND with the Gear 2 from the day it was released. I called Samsung tech support numerous times but they treated me like no one has that many apps on their phone so they want to believe it is just me having this problem. I knew it was from the number of apps that I have on my Note 3 (again because I went through the same thing with the first Gear until a couple of updates made it "better" but it still happens on that device too, where it tries to time out while loading all the apps on the phone unless I choose for it to "wait" and keep loading instead of "closing" the app). I have over 700 apps/utilities and games, and the only way I was able to resolve this problem was to do a Factory Data Reset on my phone AND on the watch, completely starting over and then ONLY install the apps I wanted notifications for, then set them up in the Gear Manager and restore all other apps afterwards...exactly like rEVOLVE did in the post above. IT WAS THE ONLY WAY! Kudos to Swade8 for finding out that the limit is really about 185 apps, I didn't have the patience to narrow it down like that, but that's good info for Sammy to know, AND IMPROVE ON.
What I STRONGLY suggest you all do is call Samsung tech support and let them know that there are more people out here like us that actually "use" their phones to the fullest and have more than a handful of apps!!!!!! Let them know that this is a real problem so they will stop ignoring it and next time hopefully develop their apps with more memory allocated to loading up these simple menu options without it crashing for months. It was really pissing me off that I have this $735 smart phone, and a new $300 smart watch that receives "ZERO NOTIFICATIONS" which doesn't make them very "smart" in my opinion, so I had to do something to resolve it! Good luck, and be sure to report this problem.
You can reach Samsung Tech Support at 888-987-4357. Please call them so that our true voices are heard and this can finally get resolved.