Do not check, Disable Power Limit Control and do not check the Clamp options.
Did you try increasing the two turbo power limits to more than 30?
Did you try using the Lock option?
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If your CPU is slowing down during a long test, show me a screenshot of ThrottleStop with Limit Reasons open so I can see the reason for throttling.
Some computers use the EC internally and set their own turbo power limits. If the internal power limits are set lower than ThrottleStop, your computer will power limit throttle. You cannot fix this problem with ThrottleStop or any software.
For the 11th Gen G7, Intel has completely disabled CPU voltage control. You will never be able to use ThrottleStop or any software to change your CPU voltage.
The 10th Gen U processors run much better. No power limit throttling.