Doerk, H., Challis, C., Citrin, J., Dunne, M., Garcia, J., Görler, T., Jenko, F., Ryter, F., Schneider, P. A., Wolfrum, E., ASDEX Upgrade Team, Max Planck Institute for Plasma Physics, Max Planck Society, & JET Contributors (2015). Turbulence stabilization due to high beta and fast ions in high-performance plasmas at ASDEX Upgrade and JET. Talk presented at 16th European Fusion Theory Conference 2015 (EFTC 2015). Lisbon. 2015-10-05 - 2015-10-08.