I've looked into this quite a bit, I was under the impression that all Ruya subs was linked to the same server, after talking to a few people it seems this isn't the case, maybe the server I'm connected to is playing up, either way like I said it was fine up until recently, I'm using a h2s now so the box should handle streaming a lot better, I'm using a different iptv supplier now and it works fine so it doesn't look to me to be the Zgemma causing the problems.
Maybe someone could advise me of any possible improvements I could make to my set up to rule out a problem with Ruya, are you using a vpn? Is there any settings on my router I should change? Like I said I've changed nothing with my set up and it's worked fine before but maybe there is now something I'm missing.