yeah HDMI 2.1 splitter box should be good, otherwise bye-bye VRR, HFR, etc on XSX.
hopefully XSX and PS5 will still support legacy audio codec realtime encoding like DD and DTS (to be piped thru HDMI ARC), so even without optical port, old and current sound systems still can be used.
btw i use cheapo TCL TV (PS4 HDMI to TV optical to sound system) and i didn't notice any audio lag. But if i run audio mirror via PSVR, the lag is pretty noticeable. Forcing me to use Optical cable directly to PS4.
i use earphones and sound system because the subwoofer makes me "feel" the game more.
hopefully XSX and PS5 will still support legacy audio codec realtime encoding like DD and DTS (to be piped thru HDMI ARC), so even without optical port, old and current sound systems still can be used.
btw i use cheapo TCL TV (PS4 HDMI to TV optical to sound system) and i didn't notice any audio lag. But if i run audio mirror via PSVR, the lag is pretty noticeable. Forcing me to use Optical cable directly to PS4.
i use earphones and sound system because the subwoofer makes me "feel" the game more.