Qualified Business Income

I own two rental properties in an LLC.  I have listed both under the "Rents and Royalties" section on Turbo Tax.  I show a loss for one rental property and a gain for the other.  I do not take the QBI Safe Harbor but do feel like the income is qualified.  When I select "Yes" on the "Is this Qualified Business Income" question for rental property #1, my tax liability decreases.  When I answer the same question the same way for rental property #2, my tax liability increases back to what it was originally essentially making zero difference on my tax return.  Any idea why this is?  Should I claim QBI for one rental property and not the other?