Internet connection problems

[Clouddancer]

For some time the app seems to have not really a connection to the internet. I try to refresh my timeline, it loads and loads and it doesn't refresh; I try to tweet, it loads and loads and the tweet won't be posted; I try to send a DM, it loads and loads and it won't be posted. When I wanna open a GIF/video or (a) picture/s, the screen stays black. My internet connection speed says that only bits per second or nothing comes through. It sometimes goes up to kseems the problem occurs the most when I am connected to the W-LAN but it occurs too when I am on my mobile connection. It's not always but it apparently happens more and more now. I tried it with cleaning the cache of the app but the problem still stays.