If you are noticing audio not syncing this may help.
If you are looking to split the PS5 feed to a display and capture card, this will help.
If you cannot hear yourself or party chat, this video will help.
Products Used:
Elgato Chatlink Pro: https://amzn.to/48TNtVn
Elgato HD60X: https://amzn.to/3x3e2de
HDMI 2.1 Cables: https://amzn.to/3IAZ1lD
EZCOO HDMI Splitter: https://amzn.to/4aeDj2L