As I have said several times the issue is the hosting sites the add-ons you are using to stream from are overloaded.
The fact that you are getting good performance from official subscription services like Netflix and BT sports proves that your internet connection is good and also that your box is in good shape.
I have already pointed out that live sports streaming from unofficial sources,whether in Kodi or from unofficial android apps can be problematical.
There are really only 3 solutions:
1. Free - try alternative Kodi add-ons or unofficial android apps to the ones you have said you use.
2. Read up on a premium hosting service called Real Debrid which may help Kodi movie and TV show streaming (I use this)
3. Give up on free and take up paid subscriptions to legitimate streamers e.g. Netflix or Amazon prime. There are also some unofficial subscription IPTV channels which i, personally , would not recommend.
Btw acceleration settings are not in Ares (which has gone) or wookie. They are in system settings. But it will make little difference.