The most annoying thing for me is that after I download the beta, I can play with jade and kabal, but if I quit and go back, it takes me to the stress test version without them. No matter now many times I reset the game, it takes me to the stress test. The only solution is to delete the beta and reinstall, then I can use jade and kabal...but again after playing for a while, quitting, then going back...poof...jade and kabal are not there and I have to delete and reinstall again. Terrible.
Anyway, I also have plenty of audio issues with buzzing during the start and end of a match. Really annoying...but it is a beta.