NewTek TriCaster 8000 - Manual (Page 157)

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The Switcher Memory ‘gauge’ tracks how much system memory is consumed by
currently selected virtual sets, transitions and the like. (If you do inadvertently
overtax the effects system by pre-selecting many, many large custom effects – an
unlikely scenario – you might just reach the limit, which could in turn result in
dropped frames.)
Hint: Another useful bit of system information concerns avaliable drive capacity. The
remaining space on each individual storage volume mounted is shown in the Save To
menu in the Record Configuration panel.