If the list says you will run into significant issues with ChromeOS Flex on your computer, consider waiting until the issues are resolved. This is a great way to know how well the OS will perform on your old PC and whether you will encounter any problems. Google maintains a list of certified models for ChromeOS Flex along with their End of Support year.
If you haven't tried ChromeOS, ChromeOS Flex provides a great (and cheap) way to experience it.
If your company cannot afford to switch to Chromebooks at one go due to the investment size, ChromeOS Flex is a great viable solution as it works on existing hardware. Google claims enterprises can get up to 295% return on their investment with Chromebooks and save three hours per device per worker over a three-year period.
