The Lenovo ThinkPad L590 is a solid business laptop at just under $1,000, but it is not without its problems. The 15.6-inch laptop appears to offer plenty on paper, with Lenovo including a quad-core Core i5 Whiskey Lake CPU, 16 GB of RAM and 512 GB of NVMe storage. However, its cooling system holds the device back, hampering its CPU performance.
https://www.notebookcheck.net/Lenovo-ThinkPad-L590-A-budget-business-laptop-that-falls-short-of-expectations.440456.0.html
The company where I work buy the L 5xx series from Lenovo, they are low quality. The integrated GPU keep loosing connection to external displays and the numerical keys makes you stay incorrectly if you want to look at the middle of the screen, it's not ergonomic. Also, the display is dull. I have external displays and keyboard to compensate. Lenovo removed the light above the screen to save some money, a few cents probably...