Thanks for the feedback!
Try lowering the fullbacks below the value of 75. Also lower the RF below the value of 41.
But if you lower these values, CPU's offense will go through forwards, also when you lower RF below 41, players hardly get tired, which is not realistic. Also I recommend for a less fast game put SS-- 33-34 user/ 35 cpu, try this first, if the problem persists lower the fullback and RF values.
You are free to experiment, try different combinations!
After TU7, I test marking--95, and width--55. Try these 2 values for more sophisticated protection at and from the CPU.