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October 11th, 2014 16:00
P2815Q, Sluggish, Mouse Delay
I'm seeing the EXACT same problem here. I have a Dell 30" monitor (U3014) cabled as the primary monitor to DisplayPort #1, and this new P2815Q cabled directly to the video card on DisplayPort #2. I'm running on a Dell Precision Workstation 1700 with the AMD FirePro W5000 ($400) graphics card--this card is insanely fast and is definitely not the issue (as my 30" 2560x1600 monitor does speedy great).
The P2815Q is absolutely sluggish. It feels as if everything I do on the screen is like dragging my feet through tar. It is terrible.
It's at the point where you can actually see delays in typing, and window movement or mouse movement is slow enough that it's tough to accurately position and move the mouse because of the delay.
The image is beautiful, no doubt. But I never would have bought this monitor if I'd known how sluggish the response was going to be. I don't game, but I can't imaging any type of game, 2D or 3D, being playable on it. Video is clunky and chunky and jittery. Wow. I'm just floored at how bad any kind of motion on this monitor is. I was very used to Dell being more of a premier monitor brand, but their recent monitors have me really disappointed.
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DELL-Chris M
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October 11th, 2014 22:00
The P2815Q 30Hz compared to the 60Hz of the other monitor will feel slow. As a test, back the resolution of the P2815Q down to 1920x1080 60Hz. Then test for sluggishness and mouse delay. Of course, this will not fix the 3840x2160 30Hz issue. Concerning the mouse lag itself, there is no fix. Due to the hardware architecture, the mouse lag is a result of the P2815Q requiring 100 ms to process video data. This cannot be changed with a firmware update. It would require a new architecture from the ground up which we will not do. Your only recourse is to return the monitor for refund. Outside of the initial 30 days from the invoice date, it will take manager approval to get a refund. Using the Dell service tag number from the P2815Q, contact Dell Technical Support for your region. Explain that we do not have a fix for this complaint. The technician will need to escalate to their manager.