Okay but wat scripts do I need look at to try to attempt this

Hello everyone,
i wanted to ask you some questions.
I have UFE bundle with network addon and i have integrated already Photon over the network system but i'm facing some issues.
First of all, when there are more than 2 players online at a time in a waiting room and i want to start a network game between 2 players i'm able to start the character selection screen but the choices of the two players are not synchronized. It seems that the bug is inside the getlocalplayer method that returns -1 rather than 1 or 2. Any idea on how to handle this? Where should i look to try and fix this?
Another issue i'm facing is about the slow motion when fighting against another player (my game should run only on mobile phones)
I know this could be fixed trying different settings of min and max frame delay but i'm at the point that i have reduced the lag but i'm loosing few frames. It happens for example that when player 1 wins the match, player 2 is still alive with poor energy because the last attack of player 1 missed on player 2 client but hit the opponent on player 1 client.
Any suggestion about the ideal settings for frame delays?
Thank you in advance

Thank you for your answer.
For mobile phones i have to set frame delays around 20 to have the game run smoothly. I thought the desync problem was bound to frame delays but yes, i'm using 1.7.1. However, when i updated the plugin i did it manually because i had customized some scripts and maybe i wonder if i didn't updated correctly some scripts. Could you tell me where was the desync bug? In which script?

Hi,
i done with online photon networking.
if someone wants help please ping me back.