https://liveclasses.ru/course/photo/adobe_lightroom_classic_system_optimisation/
Even if you are new to Adobe Lightroom Classic, you probably already had problems with the speed of the program. This may concern both the speed of generating and viewing thumbnails in the Library module, and working with a single file in the Develop module. This class will help you solve these problems. We will touch on the possible reasons for the slowdown and talk about what can be done to increase the speed of work, talk about various aspects of speeding up the system - computer speed, optimizing Lightroom and the catalog, the correct tool for processing the file, and also give basic recommendations and dispel some "forum" misconceptions. The author has put together the most important tips for optimizing the system, based on many years of experience working with large catalogs.