I passed the info on to our IT guys and this is the exact message he sent back to me.
'Ok, so there is an issue with betslip not being super fast, Ill take a look at it tomorrow'
Thanks, but this one is not a speed issue I think. I don't know about others who experienced this black screen, but for me, when this happens it is permanent. That's why this refresh idea made it so noticeable - because without refresh, I CAN (50% of cases) add things to betslip (takes several secs though). But after a refresh it never works for me.
Glad to hear it is worked on though, but I guess it will never be as fast as used to be. Will the old mirror be kept up for longer?