Notes about the GDR file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries
, unused processes and other unfavourable system settings to identify slowdown issues.
The GDR file type is primarily associated with 'GRAFIK Eye Designer' by Lutron Electronics, Inc.. GRAFIK Eye Designer is a utility that specifies Lutron dimming and switching equipment. Usually called USER.GDR.