iPlayer only works with 2min delay

To get BBC iPlayer to work well I have to set the "seconds to delay start live stream" to 2 minutes. If I set it to 1 minute the playback breaks up every few minutes. If I set it to 15 seconds not only does playback break up, but it also takes about 30 seconds to start playback at all. I think this is quite an old problem. Just wondering if there is a fix yet?

BBC iPlayer v1.5.4.5
Buffer fullness set to 255.
Live Stream Pref=DashFlac->Dash
Bitrate for Live stream DASH = Use highest bitrate available
Repository=http://downloads.sourceforge.net/project/bpaplugins/V154testrelease-repo.xml
1 year old PC running Windows 10 64bit, i5, 8GB, SSD.