Free-electron lasers (FELs) are the most advanced class of light sources, enabling for a wide range of innovative experiments such as two-color pump-probe spectroscopy. For this experiment, it is required to control the temporal delay between two X-ray pulses. For this purpose, the soft X-ray Self-Amplified Spontaneous Emission (SASE3) beamline at the European XFEL is equipped with a magnetic chicane (MC) that delays the electron beam and, therefore, the corresponding photon sources. Using an optical delay line (ODL) would allow the implementation of two pulses crossed with zero-time as well as negative delay [1]. The ODL consists of a double optics chicane using four flat silicon mirrors coated with 50 nm B4C that delays the x-ray beam. We present a brief description of ODL and review its specifications. We investigated the effects of mirror surface error on the beam spot with both ray tracing and wavefront propagation software. Using finite element analysis software (COMSOL), we studied whether ODL optics will survive during a single shot and multipulses. Still, investigating the damage threshold will remain the focus of future work.