Transpaternt PROXY in Bridge Mode

Hi I want to install the Transparent Proxy in Bridge mode.

The secnario is mentioned below.

INTERNET GATEWAY—>TRANSPARENT PROXY IN BRIDGE MODE—> MASTER MT for CORE DISTRIBUTION—> CUSTOMER.

If i will configure the TP in MASTER MT, the cpu load reach 100% all the time.

What will be the configuration for TP in Bridge mode. Please also let me know the if the secnario is WRONG.

Thank you all in ADVANCE.