Hi all

I bought the Sony KD55AG9 last November (2020) and have been happily watching Amazon Prime on the TV (via the app that is built into the tv) since then.

Last night i selected something to watch in the app and there was no audio and juddering/skipping picture (like it was stuck on slow fast forward.

I've changed nothing since the previous day. 

I've checked wifi speeds, which are the same too. 

All the other internal apps, bbc iplayer, itv hub etc. all work properly still.

Do you know what is causing this and what the solution is please?

Many thanks