Issue Found: Motion effect (D-box) does not work with S397 cars. Steps taken to resolve: Increase / Decrease effect Intensity in D-box game control settings. Result: No improvement, zero motion related to skid-effect (longitudinal & lateral). Test other Content in rF2: content by ISI / Reiza / RSS / Other car mods. Result: Skid effect works normally (D-box Skid effect default setting @ 17). Issue reported by another rF2 / D-box user as well.