XPS 27 (7760) - Laggy when using software...

Question

Hi guys, I've just really got my XPS27 setup - I'm planning on using it to replace my aging Vostro 360. I do a lot of Adobe Animate / Photoshop work. The problem is my XPS27 -- is just SO laggy when trying to work - moving objects around the screen, like movieclips, or parts of a photo. You click an item - hold down the mouse key, and instead of moving, you don't see the result until you let go of the button - then the item 'jumps' to the location. So it makes fine detail work impossible. The same for text - you click text, and drag your mouse to resize text - and there is no live updates - once you let go of the mouse button the text appears the new size. It's horrible to use - especially when its running fine on my Vostro360. The only reason I upgrade was for the nice new 27inch 4k screen. I've used photoshop and animate (flash) for YEARS and I am sure it's not settings in the software causing the problem. I have it all set to use max settings. I feel like the xps27 isn't using the graphics card - and is trying to only use the on-board graphics. Trying to change this using the Radeon crimson software is near impossible. I've set both software to 'maximum performance' in crimson - but it makes no difference. I've tried to find if hardware acceleration is enabled - but I cannot find that anywhere. I've also changed different bios options - but again, no luck improving the lag. I'm starting to wonder if the graphics cards aren't up to the job of editing on a large 4k screen - it is a laptop graphics card after all? (Is anyone having luck with theirs?) Any advice or ideas would be great! I've also emailed support. The last thing - my invoice says the machine I purchased should have a AMD R9 M485X 4GB GDDR5 - but my system has a AMD R9 M390X -- is this the same card (relabelled?) or has Dell downgraded my graphics card? Thanks again for any help!

RoHe · Answer

I pinged my Dell tech contacts about your questions. Here's what they told me...

Dell never sold this system with an AMD R9 M390X video card. The problem is with Dell's OEM GPU driver.

Go to the AMD web site and download / install the retail version of the AMD Catalyst driver. Reboot when that's installed.

Now install free "standard" version of GPU-Z (free). Run GPU-Z and post all the results in this thread. Here's the link to download GPU-Z:

http://www.techpowerup.com/.../

EDITED

aleebow · Answer

Thanks Ron -- I uninstalled the AMD software - I then reinstalled the AMD Crimson software - as Catalyst isn't available for my system.

This is the result of GPU-Z:

gpuz.techpowerup.com/.../e67.png

(Device manager reports the same graphics card)

Thanks so much for the reply and help

DELL-Chris M · Answer

aleebow, According to our tools, the XPS 27-7760 never sold with a AMD Radeon R9 M390X.

RoHe · Answer

Guess Dell-Chris M will have to check your system info to see what's going on with the GPU identity. BTW: Did re-installing the Crimson software help the problem?

DELL-Chris M · Answer

Based on the service number, you do have the AMD Radeon (TM) R9 M390X. Which is contrary to the item listed on your order number =
490-BDMH AMD R9 M485X 4GB GDDR5 KHCK5

You need to contact UK Technical Support and show them this data.

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