Bug Is the game on the ground ? EA UFC 2 HELP

I would like to ask a question about the ground game. It is not clear at all how it works at full
stamina and stamina of my opponent is not possible to block the passages have a feeling that the window
for entering 0.00001 seconds well, there really is not possible , as if I have the advantage in stamina
and we are on the floor or in the clinch 2/10 attempts transitions can I block . What is the problem how to deal with it ?
Clamped advance R2 and pull during the transition RS. I did trase to the EA server Ping stability .