Low encode of RTX 5080

Forum|Forum|25 days ago
April 3, 2026
4 replies
247 views

Recently, I switched from an RTX 3090 to an RTX 5080, mainly because of 10-bit support, as I work with this kind of footage on a daily basis. After installing the card, I did a test render and found that render times were 6–7 times slower than on the 3090, which was really weird. I tried everything I could think of to fix it, and I even formatted the C drive, but nothing helped. In general, Premiere Pro (26.0.2) uses only about 5% of the encoding capacity, while an older version, such as 25.2, uses about 11–12%. I also tested HandBrake, and there the GPU was being used to its full potential. The same raw clip took about an hour to render in Premiere, while HandBrake finished it in 7 minutes. Timeline performance is also significantly better on the 5080 than on the 3090, and I pretty much no longer need proxies. However, when it comes to final rendering, my iGPU can now render faster than the 5080. Do you have any idea why that might be?

Specs:

CPU: i9 13900K

RAM:128GB DDR4 3600 MHz

GPU: RTX 5080 GamingPro OC

MOBO: ASRock Z790 PRO RS/D4

Correct answer Oskar276318494kbe

The issue has been resolved. All the problems were caused by an old PCIe 3.0 riser cable...

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Oskar276318494kbeAuthorCorrect answer

Inspiring

The issue has been resolved. All the problems were caused by an old PCIe 3.0 riser cable...

jamieclarke

Community Manager

Hi @Oskar276318494kbe - What GPU driver are you using? What is your codec, bit depth, and chroma sampling of your file? Do you have color management enabled or disabled? Does either make a difference? What are your export settings can you share screenshots of all of the settings by clicking the more…?

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Oskar276318494kbeAuthor

Inspiring

Here is video of whats happening: https://drive.google.com/file/d/1Qy0Cylu0vk3elpjf7hUjYPO30PbYz4oC/view?usp=drive_link

jamieclarke

Community Manager

Hi @Oskar276318494kbe - Thank you for the video, that is very strange. Does the same thing happen in Premiere version 25.6.8 or Beta? Are you using the Studio Driver version for the 5080? Do you have any custom settings in the Nvida App?

If you close all of your third party panels does the same thing happen?

R

RjL190365

Legend

The problem here is the fact that you’re only performing one encoding job at a time. All NLEs utilize only one encoder when you’re performing a single job. The RTX 5080 has two encoders whereas your old 3090 had only one encoder. No program can circumvent this.

In order to utilize both encoders, you must perform two parallel encoding jobs at a minimum.

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Oskar276318494kbeAuthor

Inspiring

Alright, I see. So how should I do it? I saw a video from Tech Notice about the 5080, and it seemed like he didn’t have any issues with that card.

Also, two things. First, an older version of Premiere does use more GPU, around 11% as I wrote. Second, HandBrake uses pretty much 100% of the card. You said, ‘No program can circumvent this,’ but now I feel like something is not right with Premiere. It all seems weird to me. I mean, how can upgrading to a better card result in worse render times?

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Oskar276318494kbeAuthor

Inspiring

Sorry for double reply, but this is what is happening. Premire use 5%, while Handbrake 40-50% on the same clip, and this is raw clip. Please look at the Video Encode. They both are set for NVENC.