Problem combining parallel computing and fast Restart in Sensitivity Analysis

I use Simulink Design Optimization to preform Sensitivity Analysis. To speed up the Simulation I tried to combine Fast Restart and parallel Computing, but it did not work and produced NaN values as a Result. The Problem is independent from the used Simulink model. Fast Resatart and parallel computing work perfectly alone but not in combination. I get the Problem in bothd the Sensitivity Analysis Tool and by Code. My current Matlab version ist 2017b and the version of Simulink Design Optimization is 3.3. Does someone have an iedea how to solve this.