Not playing 21 so can't help you with that, but PCI size is directly related to the contact sliders. If you feel that CPU contact has been buffed, here are some other symptoms to look out for:
Wider ideal timing window (hard to judge for the CPU) higher bat exit velocity floors. Better CPU pitch discipline. If you feel like you have multiple of those symptoms after the patch, I'd recommend turning down CPU contact a notch.
Sent from my Pixel 3 using
Operation Sports mobile app