Well it doesn't affect my regular bank account so if you have any info on it do everyone a favor and post it.
What I'm posting is what I'm finding on the Internet; I'm not a banker or employed in that field. That said, here's yet another bank, with a bit more info. (it appears that the regulation is applied to interest-bearing accounts, not the type of institution in which the funds are held):
Federal regulations limit the amount of transactions on interest bearing accounts to six per month,
with no more than three of those from a check. Excessive withdrawals may result in closure of the
account.
https://valleybankandtrust.com/personal_products.htm