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TMS320F28377D: Speed problem between cpu1 and cpu2 of 28377d

Part Number: TMS320F28377D

This is a question about the speed of cpu1 and cpu2 of the f28377d dual core.

If I only activate cpu1 of f28377d, one loop takes 1s.
But when I enable cpu1 and cpu2, cpu1 takes more than 5 seconds in one loop. (All interrupts of cpu2 were tested in the disabled state.)
The processing speed of cpu1 has been slowed down.

It seems to be a ccs configuration problem.
The attached picture is the edited screen.

Can you give me some advice?

Thak you.