So up until a couple of days ago I was streaming from my PC to PS3 1080p mkvs with no lag whatsoever. I would pause the video at the start for a few minutes and then it would play flawlessly. But now it is stuttering/lagging like crazy ever 10-20 seconds. I know I should probably try and give more details but is there anything simple I can try? I've not changed anything so that's why it's puzzling. I've not updated PMS, or Java etc. The only thing I can thing of is that Windows 7 had some security updates I installed recently but surely it can't be that?