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Hi Evan, We just saw the issue you reported for v20: > Under the performance tab, when I try to increase the video card texture > cache size > and the heap texture cache size and restart CAVE, it reverts back to default. > I am > able to do this in v18. After you change the preferences, do you make sure to hit "Apply". If you don't hit that button then the preferences won't be saved, but if you do hit it, they should be saved. Can you double check on that? Thanks. --Shay Carter She/Her/Hers AWIPS Software Engineer UCAR - Unidata If you're interested, please feel free to fill out a survey about the support you receive: https://docs.google.com/forms/d/e/1FAIpQLSeDIkdk8qUMgq8ZdM4jhP-ubJPUOr-mJMQgxInwoAWoV5QcOw/viewform