just open up the CFG editor, then go into the file called: ODI Hard (or whatever difficulty you want it to be faster in)
Then in there, there is a setting called:
Fast Bowler Speeds & Spins
then it has sub settings called: Fast, Normal, Slow.
Change those files numbers to make the CPU bowl faster or slower.
The default value for fast is 0.9999999, for normal; 0.820000 and slow is 0.0000001.
So to make it faster you have to make those values higher, like to 2.50000 or something