You can raise the amount of fuel and traction of your tank by using tank-upgrade-coins.
You will get tank-upgrade-coins when you level up.
Your tank will be able to move much further, and also it will be able to climb on steeper hills.
But there's a catch.
It will not move faster.
Reduce the quality of graphic display. You can choose from very low to very high.
If this does not help you,I'm sorry The problem is in the speed of your internet connection.
With a slow internet connection you can see a picture with a delay which is accelerated fast forward. In this case,other tanks are moving at high speed,which is not true. The image is accelerated fast forward in order to synchronize timer between players.When this is done the match can begin. This happens often when the game starts,so you do not need to worry about this, just play and enjoy in game.
Sometimes the servers are overloaded. In this case,even users with high speed Internet are feeling this delay.