A cheap splitter box is fine, the more expensive stuff is a waste if it's only used up against RS.
Unfortunately, I can't find the inexpensive Silverblade HX3 anywhere, closest thing is probably the Palmer GA 03 which costs a tad more:
Palmer GA 03 | Signal Splitter & Switcher | Palmer (palmer-germany.com)
@ToshiroKarai
I think he asks since Asio4All is known to be worse than ASIO drivers tailored for a specific piece of hardware.
An ASIO buffer up at 512 adds noticeable latency, you might have learned to live with it, but it is there.
would at least try to get it down to 128, if you don't get any pops and crackle it should do fine.
Upping the audio format also reduces latency to some degree, but same as lowering the buffer, it will cost more CPU resources.