Bypassing all audio effects
From the Options menu, choose Bypass All Audio FX to omit all audio effects (track, bus, and assignable effects) during playback.
Bypassing effects allows you to quickly compare your project with and without effects and conserve processing power to avoid playback problems.
TIP When effects are bypassed, you can choose whether bypassed effects remain open. When the Keep bypassed FX running checkbox on the General tab of the Preferences dialog is selected, effects remain open so you can bypass/enable effects with no pause for A/B testing. When the checkbox is cleared, effects are fully bypassed, conserving processing power.