Recommended video card for Lightroom

Thanks David, much appreciated. 

Do you think that when I imported some Photoshop Elements 2019 conversions I might have inadvertently imported pictures processed with the old Raw converter, presumably version 4?  I installed Lightroom only two months ago so nothing I have done since then can surely have been with the old raw converter? 

Would it best for me to remove all JPEGs and PSDs produced using Elements 2019?  I don't mind removing them from my catalogue as I have streamlined my post processing workflow to match the Lightroom methodology.  I no longer produce archive PSD files or JPEGs.  I generate them from Lightroom when required and then delete them when they are no longer needed. 

Not sure if anyone will read this but I have made some progress with this issue. 

I installed another instance of Lightroom under a different user name on my PC.  On this instance Lightroom fully supports full graphics acceleration on my card.  It says by the check box for full graphics acceleration "Process version 5 or higher".  So that must be the key difference.  There is something different between the two catalogues.  But what?  Process 5 refers to be a new version of raw processing so perhaps some images in the old catalogue are processes before version 5 and therefore graphics acceleration is not available?

BUT I only got Lightroom on 15th August 2019 so all my processing must have been done with the latest Raw file converter.  I did import some legacy processing from a copy of Photoshop Elements 2019 which I got in Novermber 2018.  Could that be the issue?

If so, what the heck do I do about it?

Just an update to say that I check Photoshop CC performance settings.  Under the Advanced page, I checked

Use graphics processor to accelrate computation

Use OpenCL

Anti-alias guides and paths

30 bit display

None of these were previously checked and its has made adramatic improvement to Ps performance. 

Not sure how dated the following link is. However it does mention Enhanced Details, so not too old. One thing to keep in mind, is if you use Photoshop, then a better question might be what GPU for Photoshop (mentioned in article). Also, keep in mind what if you get a 4K, or 5K monitor (bump VRAM up). Oh and remember you can not add VRAM later, so go for all the VRAM you can afford up front.

https://www.pugetsystems.com/recommended/Recommended-Systems-for-Adobe-Lightroom-Classic-CC-141/Hardware-Recommendations

One afterthought on that link. It places a low importance on VRAM for Lightroom Classic. That  may not be true, or at least not true  in the future. And they mention a caveat about 4K... And do not forget your Photoshop,Photoshop can take advantage of VRAM.

What is the your GPU driver version/

Do you have installed on your computer a utility called NVIDIA GeForce Experiance?

Use NVIDIA GeForce Experiance (driver tab) to inspect, and look for an update to your GPU driver.If a new one exists, select the clean install option when you update.

But I notice you link says "Intel: Skylake GPU or later (Kaby Lake, Coffee Lake, etc.)".  Dowes that mean that Windows bioxes using AMD Ryzen CPUs are not supported for image processing? 

That requirement refers to the processor on the GPU card.

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I have noted that my GeForce 1030 GPU motior shows that Lightroom is running but Lightroom settings say that only basic graphics acceleration is enabled.  I guess the question is whether I can enable "advanced" graphics acceleration but card set up does not seem to mention anything about that

What part of the Lightroom image processing is sluggish?

Here you'll find a lot of informations about the requirements:

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