Why doe my phone flip out when downloading photo attachments?

[AC Question]

I've noticed on my s7 edge, that if I download multiple photos at once to my phone, it starts flipping out. The screen goes black, it lags, etc. Then after a while it goes back to normal. I'm using the outlook app.

 

[Tim1954]

It's likely the outlook app, mine plays up at times. Microsoft has ruined Hotmail totally...
Try clearing the cache in the app itself, force stop the app itself and reboot it.