Acestream buffering

Hi guys

I get consistent buffering on Bloodzeed and Delvey. I'm on Virgin Media with a 50MB line, tried SwitchVPN VPN's and that also got consistent buffering.

The below is my Acestream details:

Ace Player Version 2.2.5.1 (VLC 2.0.5)
Port 8621 (Port Forwarding enabled on the router)
Total max connects 500

Max connects per stream 150
max slots 10

Any tips/advice on how to resolve this?