Lightroom does not use the GPU GTX 3090.

[youthful_perfection5E30]

I had a GTX 1080 TI card, I bought a new, efficient RTX 3090, the card works great in Benchmarks. 
I installed new drivers.
Lightroom Classic 13.5. 
Driver 

Problem: the program does not use the card. It makes no difference whether:
1. Auto is enabled
2. Manual
3. Card support is disabled.

I checked the card on 2 drivers:
1. 560.81-desktop-win10-win11-64bit-international-nsd-dch-whql
2. 560.94-desktop-win10-win11-64bit-international-dch-whql
The effect is the same.

How can I solve the problem with exporting photos.

[GoldingD]

Why do you sate that it is not in use. These sceenshots of usage are nice, but without context they are of no value. What were you doing in LrC when you looked at the GPU use? Were you busy in the Develop Module. Or were you in the Library Module? And does that use cover when LrC needed to use the GPU? 

Library Module, will not be bending the GPU

Develop Module may heavily use the GPU when callede for.

Perhaps watch the GPU graphs while attempting a AI Denoise, or an Enhance.

[youthful_perfection5E30]

During the screenshots, I exported photos from RAW to JPG. On the internet I found graphs that show GPU usage during RAW export to JPG. In my case it doesn't matter what I set.

LC only uses CPU. to exports.

[youthful_perfection5E30]

Link to tests:
https://www.youtube.com/watch?v=OEWjTZ6nhWE

For me, exporting 200 RAW to JPG takes 10 times longer. 

Link to tests: 
https://www.youtube.com/watch?v=OEWjTZ6nhWE 

For me, exporting 200 RAW to JPG takes 10 times longer. 
The screenshots show that the card is not used.

[youthful_perfection5E30]

NVIDIA GeForce RTX ... : Encoding, Viewport & Final Thoughts

https://techgage.com/article/nvidia-geforce-rtx-4070-ti-12gb-creator-review/2/

[youthful_perfection5E30]

From what I've learned, GPU support in Lightroom is for cards with DX 12.2.

RTX 3090 has 12.2 support.

I don't know why Windows 10 sees 12.1?

I cleared Windows 10 of previous drivers. 
I reinstalled the latest ones.
Unfortunately, it didn't help.

[youthful_perfection5E30]

I found a DXdiag file showing how the DX 12_2 library should look like. I suppose that's the cause.

Updates don't help. I removed the drivers with a special program and installed the latest ones. Nothing helps.

[GoldingD]

I do not see this on my rig, but mine has a RTX 3070.

Have you ever considered:

https://www.youtube.com/watch?v=tELpPlkXlVE

slightly dated.

[youthful_perfection5E30]

Thanks GoldingD for your support.

I finally updated to Windows 11 and it's ok.

I'm disappointed that LR doesn't use 100% of the card's performance, which is a shame.

Best regards Marcin

[youthful_perfection5E30]

Hi GoldingD,
I've implemented your LRC optimization tips 🙂 from the link you provided.

I have a request, can you check or make a print screen while exporting photos to JPG.

I'm curious to what percentage the card is charged.

[GoldingD]

Screen capture one export (Fuji X-T5 RAF) to JPEG (full)

https://www.dropbox.com/scl/fi/3f72zlxcvu8q7rxhvuax6/2024-08-30-08-34-48.mp4?rlkey=zypdgdugre9sqam8a...

[youthful_perfection5E30]

Thank you for the tests, what is your CPU and GPU coverage if you export e.g. 100 photos?

Best regards, Marcin

[youthful_perfection5E30]

For me it looks like this. I absolutely have to replace the processor with a newer one.

[perfect_goal1587]

If you had a 1080 and upgraded only your GPU, i think you have an ancient CPU. And this is your problem. You are bottlenecking your GPU. It will not go faster...

[youthful_perfection5E30]

It certainly is.

I was convinced that LRC uses 100% of the GPU and relieves the CPU.

I have to change the CPU to a faster one.

Best regards

Marcin

[GoldingD]

You may want to contact Adobe. Typically via a CHAT, and when doing so, be assertive to request an actual Adobe Tech to join in or contact you. Include the link to this discussion in the chat.

To do this, bring up fairly much any Adobe Web Page, And look for the Contact buttons. Looks like:

 for example at:

https://www.adobe.com/about-adobe/contact.html

[youthful_perfection5E30]

Thank you, I'll use it.

[GoldingD]

By the way, from:

• https://helpx.adobe.com/lightroom-classic/kb/troubleshoot-gpu.html
•  

in your Device manager, is your integrated video controller enabled, dome have an issue with that (in my case I have that disabled in the BIOS, an option some may not want to contemplate)  Just disabling it in the Device Manage can help.

[youthful_perfection5E30]

Ok thank you.
I only have one card.
Regards