Highest speed for a loop in the microprocessor of my CRIO?

Hello:
Im trying to develop a control system for an inverter with with my CRIO 9022, the speed of my system is 10 kHz(the switching frequency for the inverter is 10 kHz).
Im trying to develop the controller using the microprocesor, but I was reading that the highest speed achievable for a loop in the microprocessor is around 1 Khz, is this true?
If is it, how can I develop a control with a loop of 10 Khz? this speed is only achievable using the FPGA?
Thanks a lot!
Regards

Sorry for dont attach the subVI, but the calculation that I perform inside are not diffcult, the first one is only aritmetic calculations and the second one is a PID (I attach them).
Maybe I can try to move them to the FPGA, but would be very tedious because I need huge times for compile and if I want to make any change will be very more difficult.
Do you think that the processor can not carry out these loop a higher speed than 400 Hz?
Thanks
Attachments:
SubVI1.PNG ‏50 KB
SubVI2(PID).PNG ‏81 KB

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