Aqara Dual Relay T2 lag/delay

Hello

I have installed Aqara Dual Relay Module T2 and I have a problem with lag / delay while I use physical buttons connected to COM / S1 / S2. When I press 2 buttons at the same time it doesn't turn on both relays at the same time but there is a delay like 0,5s.

Anyone else have this issue?

Sorry I cannot answer your question but I also have one of these and cannot find how the access the S1 and S2 inputs as the driver does not mention them.