I have bought 2 pieces: 1. splitter from PS4 to Smart TV and beamer works perfectly. 2. splitter Swisscom TV to Smart TV and beamer (TV signal to beamer has interference) to Smart TV works. I changed the whole thing and it is not due to the splitter, so it is not defective, Swisscom TV directly to beamer without splitter and it works. Where can the problem be? Do I have to have a special splitter? Thanks