In DFT simulations, 0.01 ev/Å on force is a very high convergence criterion. But if converge it to the pressure, you will find it still generate a super large residual pressure.

∵ 1N = 1J/m

∵ 1 eV=1.6*10^-19 J
∴0.01 eV/Å =1.6*10^-11N

Assume there is such a residual force on Pt111(1x1) (Pt lattice constant ~4 Å)

then it generate a pressure

0.01 eV/Å/(4√3Ų)

=1.6*10^-11N/(4√3Ų)
=2.3*10⁸ Pa

=2.3x10³ Bar

=2.3 kBar

This is a few thousands atmospheric pressure