Currently OC1 setting only applied to 1070 and 1080ti on BeamHashII algorithm, for all other cards and algorithms this option is ignored.
When it applied miner select alternative kernel version that may better work than default kernel with your OC settings.
It is sad that old cards like 1050 and 1060 are no longer a priority and are not supported by miner developers. But for now they are much more in working than video cards of the 2000 series.