Face-on evolution of the no feedback simulations with varying Jeans floor and initial magnetic field geometry (B_0, z two top panels, B_0, ϕ bottom panel). The time for each column/Jeans floor (N_J = 4, 8, 10, 16) is t = (0.5, 1, 1, 1) Gyr respectively. The N_J = 8 case exhibits the strongest magnetic field growth at early times, likely through an active GI or αΩ dynamo within the developed filamentary structure. Further reducing the Jeans floor leads to too much fragmentation of the disk, reducing the effect of the active dynamo. For higher Jeans floor GI remain quite weak at this time, leading to either a weak amplification or decay of the magnetic field in the disk. However, in the case of the N_J = 10 and B_z, 0 where a small fragment has started to form, the disk will become unstable at a later time (see Fig. 6).