“I have Macbook air and bought this monitor but noticed lagging in UI usage since I am using HDMI - HDMI. What is the appropriate cable that I should be using to avoid this lagging? USB-C to Displayport cable? or HDMI to displayport?”
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Determining what is causing the lag for the UI on the LG 27'' Class 4K UHD IPS LED Monitor with VESA Display HDR 400 (27'' Diagonal), Model # 27UL600-W will require some troubleshooting since it could be the cables that you are using, the ports from which you are connecting from, or a cobination of the two or something else. The monitor features a version 1.4 DisplayPort and 2 x HDMI 2.0 ports. DisplayPort 1.4a can deliver 32.4Gbps (6.48Gbps per lane and HDMI 2.0 delivers 14.4Gbps. Based on that alone, DisplayPort would be the faster port to connect to. Cables also have their specifications and are grouped together under one of four speed categories: Standard, High Speed, Premium High Speed, and Ultra High Speed. Standard HDMI® cables (also referred to as category 1) have been tested by the HDMI Licensing, LLC to perform at speeds of 75Mhz. This is the equivalent of a 1080i signal. High-Speed HDMI cables (also referred to as category 2) have been tested by the HDMI Licensing, LLC to perform at speeds of 340Mhz, which is the highest bandwidth currently available over an HDMI cable, making them able to successfully handle 1080p signals. High-Speed HDMI cables also are able to accommodate higher resolution displays, such as WQXGA cinema monitors. Te underlying technology for USB-C ports can be USB 2.0, USB 3.0 or USB-C 3.1 so that all makes a difference in the trasfer speeds as well...^IFV
Sorry, there was a problem. Please try again later.If using a recent MacBook Air, you'll want to use a display port to USB-C cable. That said, you'll almost certainly need to run the external display to run at a pretty low resolution because the Air has an integrated graphics team.
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