PO11 O2 Sensor responding slow

Pulled code and came up with a PO11 I believe which said sensor which I swapped was responding slow and triggered engine light. Anyone encounter this problem? I guess I try swapping out 02 Sensor again. Thought it was the p1128 code and maybe MAF but that's not it. A PIA though for sure as I don't want to drive with light on and would like to resolve. Any ideas or suggestions much appreciated.

PS: Merry Christmas, Happy Hannukah, and Happy Holidays for any I missed.