See:
https://helpx.adobe.com/lightroom/kb/rollback-driver-amd-issue.htmlWe're working with AMD to try and correct this problem. We have also identified the following procedure as a potential workaround:
Launch the "AMD Settings” utility software included as part of the AMD Radeon Software Crimson ReLive Edition 17.4.4. Click on the Gaming tab, then clicking on the Global Settings tab, then click on "Wait for Vertical Refresh" and set it to "Always on". Quit the "AMD Settings” utility. Then relaunch Lightroom and Lightroom would seem to work fine without crashing the AMD GPU driver (*).
* If you later toggle the "Wait for Vertical Refresh" settings back and set it to factory default value "Always off", Lightroom will continue to work without crashing. So it seems the actual value of "Wait for Vertical Refresh” does not matter, but the act of toggling the "Wait for Vertical Refresh” in the first place seems to change some hidden driver factory default settings that would make the Lightroom crash disappear.