Thank you very much for this Hristo and your helpful suggestions.
I re-enabled SGO and setup to use https and also SG support blocked on very active botty site that over-trafficed. Now (touchwood!) the cpu usage is down massively and that problem has gone away.
TBH so many changes were made I dont know what fixed the issue – I believe it is as I crosspost in the PS below from another forum. Your explanation is a good one but at the time I was not using https so it couldnt have been that stopping it.
Anyway touchwood everything works now and below is the workround that I feel made all the difference (goodness knows why – no idea re this cookie thing).
Thank you again for your time and effort.
Mike
PS crossposting:
Thank you for checking it works at your end. My big concern of course is not that its just a pain for me but that it doesnt work for listeners around the world.
Yes I gave a poor(/no) description. What actually happens is that the audio player flickers that striped pattern that it normally does when fetching an episode. However rather than a white bar and starting to play which is the normal mode it appears to give up and the flickering goes away and player reverts to its inactive mode. If I re-click it at that point it doesnt even bother to flicker. My guess is for some reason the “fetch file” instruction fails.
I eventually found a workround. I had to use the SGO plugin as my cpu usage went into overload without it.
The workround I found (but this of course leaves me with slight nervousness that of course I cant be the only person in the world who has this problem) is to set Chrome to clear the cookie for the website everytime I leave it. For some reason (goodness only knows) this solves the issue and the player works normally.
[In passing the hint to me was that I never had the problem if I activated the KProxy add-on in Chrome].