V-Ray GPU shadow catcher problems

I have never used Shadow Catcher in V-ray GPU because it does not seem to work correctly for me. CPU works perfectly. Was wondering if anyone else experiences this?

Thanks

Hi @marksmanguy , Shadow Catcher should be working fine - make sure that Alpha Contribution is set to -1. Alternatively, can you please attach some screengrabs demonstrating the issue or even better, forward a sample file over so we can investigate? Thanks

Could you elaborate? What exactly does not work as expected?