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# How to optimize AutoCut Silences for Premiere Pro on long videos  ?

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](https://knowledge.autocut.com/en/article/what-are-the-autocut-silences-settings-c1d975/)