Ped and player Freeze and teleport

Ihave a problem when im in the serveur the other player freeze and tp etc the ped too my connection 15mbps 2mb upload
my config desktop: i5 4590 8g ram 16 soon gtx 750i 2g strix oc edition and done why can someone help me !!!

Make sure you run FiveReborn with the correct graphics card.

nope its my graphics card

other guy say me its probably your ram i have 8g ram