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.
DELL-Chris M
Community Manager
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56.9K Posts
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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.