Just providing some data points from CPU vs. CPU games on where the wild pitch issue is at after patch v1.05.
The game shipped and before any patch was applied, the fraction of wild pitches among all pitches was about 0.67% with default sliders. The MLB average in 2016 was 0.26%.
After patch v1.05, it's still about 0.69% after about 135 games, although I should mention Pitch Control/Consistency sliders are set to 1 and 4, respectively, for the duration of my CPU vs. CPU test games (these are used to increase walks and batting average to make them more inline with MLB averages). Before the v1.05 patch, it was more like 0.80%, so the numbers do indicate there has been some reduction in wild pitches...
... however, the reduction still isn't close enough to the MLB average of 0.26%. So there still needs to be about a factor of 2 ~ 3 reduction in wild pitches.