Paul is correct. Starting from having smooth playback, to it being not so good, is evidence that Vegas is being challenged by a combination of Content, Project Settings, RAM availability and Preview Settings.
I’ve got to ask, why have you felt it necessary to download NV? Have you got specifically noisy material? Have you added any FX that has produced produced noisy, and therefore potentially hardware-demanding Previewing?
We need more information.
* Grazie
Video Content Creator and Potter
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