Bt Sport and Fox sport apps on fire stick

Hi

My bt sport app has started to jitter when playing video and so does fox sport from within directv. I jave noticed that th bt app updated itself.

Is there a way to stop the auto updates or to maybe lower the bitrate of videos to stop jitters. It is really starting to annoy me. My sky go app did it but I installed an earlier app version and it solved it. When yoi try to install an earlier bt sport app version it prompts to upgrade.

Any input would be much appreciated

Thanks

Sent from my D6603 using Tapatalk