  Anisotropy effects on flux pinning and flux flow are strongly effective in
cuprate as well as iron-based superconductors due to their intrinsically
layered crystallographic structure. However $\textrm{Fe(Se,Te)}$ thin films
grown on $\textrm{CaF}_2$ substrate result less anisotropic with respect to all
the other iron based superconductors. We present the first study on the angular
dependence of the flux flow instability, which occurs in the flux flow regime
as a current driven transition to the normal state at the instability point
($I^*$,$V^*$) in the current-voltage characteristics. The voltage jumps are
systematically investigated as a function of the temperature, the external
magnetic field, and the angle between the field and the $\textrm{Fe(Se,Te)}$
film. The scaling procedure based on the anisotropic Ginzburg-Landau approach
is successfully applied to the observed angular dependence of the critical
voltage $V^*$. Anyway, we find out that $\textrm{Fe(Se,Te)}$ represents the
case study of a layered material characterized by a weak anisotropy of its
static superconducting properties, but with an increased anisotropy in its
vortex dynamics due to the predominant perpendicular component of the external
applied magnetic field. Indeed, $I^*$ shows less sensitivity to angle
variations, thus being promising for high field applications.
