it does not have to be recalculated -- very useful for transitions and previewing effects that are slow.
\item In \texttt{Settings $\rightarrow$ Preferences, Playback A}, uncheck \textit{Play every frame} which means frames will be skipped as playback of the video falls behind.
\item Adjust \textit{Cache size} in \texttt{Settings $\rightarrow$ Preferences, Performance} tab, to not exhaust the memory and yet still provide decent playback.
+ \item When working with multiple tracks containing video at opacity 100\%, if you just want to play one of the tracks, disable "Play track" in the patchbay for the tracks that you do not need to see. This uses a lot less CPU.
+ \item For playing a track that has attached Video Effects, if you just want to play the track, you can temporarily disable the Video Effects which will decrease CPU considerably in most cases.
\end{itemize}
\section{General Crash Handling Tips}%