I'm using this product with PS5, blue ray player and TV streaming device and Marantz AV7005 pre-amplifier (5.1 sound system). The problem with AV7005 is that it does not support 4K video so I bought this device to extract audio to my pre-amp and video from 3 sources to either TV or video projector. New pre-amp is about 2,9k€ so not interested in investing into it just to get rid of disconnecting and connecting HDMI cables...
I have now used 4K/60 video sources (games, movies) via PS5 to TV using Feintech's 12 meter long fibre-optic HDMI cable. There is absolutely no problems in picture, it works, no flickering or anything!
Sound is also 5.1 but there is a catch that you should be aware of. Not all PS5 apps support Dolby Digital or DTS coding but only PCM (uncompressed sound bit stream). Via toslink you can't transmit PCM as 5.1 but only as 2 channel as toslink bandwidth is limited. To get 5.1 sound, the app you are using must support DD or DTS coding that e.g. HBO max app in PS5 seems to be missing. To fix this issue with HBO app, I put HDMI cable between this matrix switch (A output) and my pre-amp and another (B output) to my TV. Now even HBO app works with 5.1 sounds as HDMI cable can transmit 5.1 PCM sound. A negative thing is that I need to buy 1 HDMI in 2 HDMI out splitter so that I don't have to start switching cables between TV and video project but luckily Feintech has these as well!
I would not get this fix above done without Feintech's fast and skilled technical support!