Working on long recordings (2-3 hours or more) can quickly become challenging. You might notice that when AutoCut Silences reaches the end of your sequence, cuts take much longer to apply.
This slowdown isn’t caused by AutoCut itself, it comes from how Premiere Pro handles edits :

• The more cuts there are, the heavier your timeline becomes
• Processing speed decreases exponentially as the number of cuts grows
• Performance also varies depending on your computer’s specs (CPU, RAM, storage)

The good news: there’s a simple workflow to dramatically improve speed and keep your editing smooth.

A faster workflow for long projects

Instead of applying AutoCut Silences on your entire recording at once, break your project down into smaller segments.

1. Step 1 : Split your project into 20-minute sequences

Create separate timelines for each segment

2. Step 2 : Run AutoCut Silences on each sequence individually

• Example : processing a 2-hour video in one block could take ages
• With this method, the same 2-hour video can be processed in ~7 minutes

3. Step 3 : Rebuild your full project in a master timeline

Copy and paste (Ctrl + C / Ctrl + V) each processed sequence into your global timeline

Result : a clean master sequence with all silences removed without the lag.

Why this works

• Premiere Pro slows down as the cut count grows. Smaller sequences bypass this bottleneck.
• Processing stays linear. Instead of exponential slowdowns, your cuts remain quick and predictable.
• Scalable workflow. Works just as well for 2-hour podcasts, 3-hour webinars, or long-form interviews.

Think of this method like batch processing. By breaking down a heavy task into smaller, manageable pieces, you make AutoCut Silences as fast and efficient as possible, no matter the length of your footage.

👉 For more details on how to adjust your AutoCut Silences settings, check out this guide : AutoCut Silences Settings

Updated on: 27/01/2026