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.
Occasional freezes with 1.62 and RTX 2070 / GTX 1060 6G
Unfortunately, yes, I also noticed the unstable operation of the latest version of the miner. I have a GTX 1060 6g, the developers apparently pay more attention to the new models of video cards.
After using 1.62 since release, my hashrates have went down. I continued to use it assuming it may have been the difficulty, but it really should not have decreased that much imho.
I went back to 1.59 and things work as I'm used too suddenly.