At this point I cannot advise user to hold off on upgrading to win10. Most have already done so and do not plan on rolling back just to accommodate our cam chat server.
To be honest, this was an issue for me prior to win10 but I was able to rectify the issue by rolling back my driver to the original one provided with win7 install prior to any updates. It seems that an updated driver caused the conflict for me and again rolling back was the fix. I just avoided updating my video driver until win10 came along and forced me to use the current driver which has conflict with cam chat.
I will be shooting you an FB message to discuss further.