DisplayLink Forum - View Single Post - DisplayLink process 20-30% CPU on ThinkPad L570, Windows 7 64bit

singa-banga · 12-03-2018, 05:22 PM

Hi,

First off, great product it is indeed.

I have two 4K monitors connected to DL-6950 equipped adapter, ( https://i-tec.cz/en/produkt/u3dual4khdmi-2/ ).

On home Windows 10 laptop from 2014, no problem. Smooth.

On 2017 ThinkPad L570 (work laptop) Windows 7, DLUA using 20-30% CPU, causing noticeable lag and mouse skipping.

The productivity boost from 2x4K monitors still outweighs the disadvantage, but boy, if I had smooth operation, would I be transported into productivity heaven.

I am using latest DL driver from 28.11.2018, but the issue was the same with the previous version.

Laptop: ThinkPad L570, i5, 4 x USB 3.0 ports, Intel HD 620 graphics (latest driver), 8GB RAM.

Restarting the DL service doesn't help.

I don't know what USB 3.0 controller is on the machine, there are no drivers for USB available on Lenovo product page.

Is this a known problem? What can I do? Please help. :-(

12-03-2018, 05:22 PM	#1
singa-banga Junior Member Join Date: Dec 2018 Posts: 4	DisplayLink process 20-30% CPU on ThinkPad L570, Windows 7 64bit Hi, First off, great product it is indeed. I have two 4K monitors connected to DL-6950 equipped adapter, ( https://i-tec.cz/en/produkt/u3dual4khdmi-2/ ). On home Windows 10 laptop from 2014, no problem. Smooth. On 2017 ThinkPad L570 (work laptop) Windows 7, DLUA using 20-30% CPU, causing noticeable lag and mouse skipping. The productivity boost from 2x4K monitors still outweighs the disadvantage, but boy, if I had smooth operation, would I be transported into productivity heaven. I am using latest DL driver from 28.11.2018, but the issue was the same with the previous version. Laptop: ThinkPad L570, i5, 4 x USB 3.0 ports, Intel HD 620 graphics (latest driver), 8GB RAM. Restarting the DL service doesn't help. I don't know what USB 3.0 controller is on the machine, there are no drivers for USB available on Lenovo product page. Is this a known problem? What can I do? Please help. :-( Last edited by singa-banga; 12-03-2018 at 07:52 PM.