I have own  a couple of C310's for a few months now and everything works well accept one thing; the camera sensitivity.
 When its dark outside the camera reacts on snow, dust, rain or a little insect on the lowest sensitivity settings.
There have been a few firmware updates since I brought it, but those doesn't improve this problem.
 Several members on this forum and on other websites have experience this problem too, so it is a common problem.

I have write about this before on this forum, but haven't seen any improvement from TP-Link yet.

Here is my advice, I have tried several different WiFi camera through the years from different manufactures and from experience with them you on  TP-Link could easily fix this problem.

1) Add a setting in the app for sensitivity on small objects(dust, snow, rain, insects), other WiFi cameras have that in their app's and it works well.

2) Change the camera sensitivity setting from three steps to 0-100% instead.

Ths would probably fix the whole problem, because the cameras for the moment doesn't do what TP-Link promise them to do.
 They give false alarm a lot on the nights which result that you turn them off in  order to not Wake Up several times each night. 
 You buy this camera for feeling safe in this night,  not turn them off in the night due to the false alarms.

So please @TP-Link , fix this and do some changes in the app.