Hello,
What you are observing is expected behavior for the DDR tool.
The “Stop on Fail” option only applies to the Stressing scenario, this option is not available in Optimization test.
In the optimization flow, the tool is designed to sweep all ODT/driver combinations and build a complete PASS/FAIL map, so it will continue running and report all detected errors instead of stopping at the first failure.
Unfortunately, there is no option to force early termination of the ODT/driver optimization test.
Best regards.