Displacement of device over time

I have modeled a mass spring structure using solid mechanics and a time dependent study. I have applied a body load using 0.1*g_const*solid.rho. When I plot the results of displacement field, it appears that at time = 0, the mass is already at the largest displacement and subsequent times don't show much motion. But when I export the results as an animation I can clearly see the mass oscillating starting from its original orientation. Why do the plots in COMSOL and the exported animation file not look the same?

Thanks