# Different render time in preview and final render

I'm rendering long animations and it's important to me to save time. In the preview, a frame is rendered in 30 seconds, but if I render the animation, the render time of one frame increases to 2 minutes. Why does this happen and how can I get the final render with time of the preview render?

• Do you use the same amount of samples for preview and render? (You can find and adjust the values in the Sampling section of the Render tab) – Cebbi Dec 6 '16 at 11:01
• Yep. So, preview render working faster even at a glance. – Nisu Dec 6 '16 at 12:01
• Could you upload the .blend file to blend-exchange.giantcowfilms.com please? – Cebbi Dec 6 '16 at 12:03
• I didn't find a solution yet. I deleted everything in the scene, disables motion blur, light bounces, resolution and tile size ... and it's an even bigger factor with CPU. Now I don't know what else to try. – Cebbi Dec 6 '16 at 13:12
• I'm surprised) I thought that preview time must be equivalent to final render time. But thank you for trying. – Nisu Dec 6 '16 at 14:44