Add custom resolutions, remove unwanted resolutions, edit FreeSync ranges, and more.
Alternative method for Intel GPUs:

If you have an older Intel GPU, use the "Export..." button and choose "EXE file" for the file type to export a self-contained EDID override installer. Then run the .exe file and choose "Install EDID" to install the EDID override on all matching displays.

Detailed resolutions:

• Detailed resolutions are the preferred way to add custom resolutions. More detailed resolutions can be added using extension blocks.
• The first detailed resolution is considered the preferred or native resolution. All other resolutions can be removed if they are not needed. The graphics driver will automatically add some common lower resolutions as scaled resolutions.
• CRU adds monitor resolutions, not scaled resolutions. Lower resolutions will be scaled up if GPU scaling is enabled in the graphics driver's control panel, but higher resolutions won't be scaled down by the GPU. Higher resolutions will only work if the monitor can handle them.
• Laptop displays usually don't have scalers and can't display non-native resolutions without GPU scaling. To add other refresh rates, add the refresh rate at the native resolution. The graphics driver will automatically add the refresh rate to lower scaled resolutions.
• EDID detailed resolutions are limited to 4095x4095 and 655.35 MHz pixel clock. Use a DisplayID extension block to add resolutions with higher limits.
• Use the timing options to help fill in the values:
• "Manual" allows the timing parameters to be set manually. The dialog will always open in this mode.
• "Automatic - LCD standard" uses standard timing parameters commonly used with LCD monitors and HDTVs.
• "Automatic - LCD native" uses standard timing parameters for the native refresh rate. This may help when trying higher refresh rates.
• "Automatic - LCD reduced" adjusts the timing parameters for some resolutions to reduce the pixel clock. This may help when trying higher refresh rates.
• "Automatic - CRT standard" uses timing parameters compatible with CRT monitors.
• "Automatic - Old standard" uses the GTF standard.
• Pay attention to pixel clock limits:Single-link DVI is limited to 165 MHz and dual-link DVI is limited to 330 MHz unless the graphics driver is patched:
• AMD/ATI Pixel Clock Patcher
• NVIDIA Pixel Clock Patcher
• HDMI is treated as single-link DVI unless an HDMI support data block is defined in the first extension block.
• HDMI limits depend on the GPU. AMD 7000-series and newer GPUs support up to 297 MHz. Older GPUs are limited to 165 MHz unless the driver is patched.
• AMD/ATI's driver also listens to the TMDS clock limit in the HDMI support data block. Make sure to override this and set it to 340 MHz.
• HDMI 2.0 is limited to 600 MHz and requires both an HDMI support data block and an HDMI 2.0 data block in the first extension block.
• Passive DisplayPort to HDMI adapters are limited to 165 MHz unless the driver is patched.
• These DisplayPort to HDMI adapters support up to 300 MHz pixel clock without patching the driver:
• Accell B086B-003B UltraAV DisplayPort 1.1 to HDMI 1.4 Active Adapter
• Accell B086B-008B UltraAV Mini DisplayPort 1.1 to HDMI 1.4 Active Adapter
• Accell B086B-006B UltraAV DisplayPort 1.2 to HDMI 1.4 Active Adapter
• Accell B086B-007B UltraAV Mini DisplayPort 1.2 to HDMI 1.4 Active Adapter

Standard resolutions: Read more.