You are going to want to use the Playlength feature when your sequences are longer than 25 minutes and/or contain more than a few tracks. Unfortunately, MC doesn’t handle those larger sequences that well. Fortunately, there is the Playlength feature.
Open the Command Palette and find the button labeled “PL” (under the PLAY tab), map it to a key or button, and press it.
You will see the color of your play button has changed. You can now only play forward one minute or backward one minute. After a minute in either direction, MC stops. You press stop and play again to continue. The upside is that you will no longer have to wait forever for MC to catch up when you make a simple adjustment to a sequence.
What this feature does is limit the playback buffer MC makes whenever you do anything.
Press the PL button again to turn the feature off.
The default setting is 1 minute, but that is often too limiting. I like using 4 or 6 minutes, so you can work on a scene or sequence without the machine stopping playback.
To change the playlength duration, open the console (CMD-6 on Mac or CTRL-6 on PC), and type “playlength 4” or “playlength 6” (or whatever the amount of minutes you prefer.