No I haven't. Do you have any NewEgg links to specific cards with faster memory? I'll pick one up to test.
I'm sure there are other models from EVGA, GB, etc with the faster memory NVIDIA spec'd in March but here is the MSI model.
https://www.newegg.com/Product/Prod...m_re=1060_msi_gaming_x-_-14-137-131-_-Product