ResXtreme is a free Mac OS X display mode utility. It provides access to all display modes for each connected screen, including extended and HiDPI modes accessible only via private system APIs. These private modes are not normally accessible to App Store apps.
my imac is mid-2011 (21,5)
intel core i5
amd radeon HD 6750M (512mb)
8gb ddr3 ram
Updated to macOS Monterey 12.3 with the OpenCore Legacy Patcher
Even if I try other resolutions it keeps strobing.
Can anybody help me please? Thanks guys!
Note: For other users coming from penCore Legacy Patcher - Use the tab called "Depth" in the application and choose the native resolution with the "8-bit" setting and double click.