Poweredge r730xd, fans won't go below ~8800RPMs w/ ipmitool

Using [Dell_iDRAC_fan_controller_Docker](https://github.com/tigerblue77/Dell\_iDRAC\_fan\_controller\_Docker) I'm able to reduce the fans to roughly 20%, which puts them at roughly 8800RPMs. Previously, I was able to reduce them as low as 5-10% (~4k RPM).

CPU_TEMPERATURE_THRESHOLD=50
DISABLE_THIRD_PARTY_PCIE_CARD_DELL_DEFAULT_COOLING_RESPONSE=true

This used to work, but I did two things:

1. I removed CPU2 and all of it's RAM
2. I moved my nVidia RTX A4000 from PCIE slot 4 (which is on CPU2) to PCIE slot 1
3. I also moved my two SSDs from the rear bay to the front (using the adapter from Dell)

My server is well ventilated with cool air and CPU temperatures are all <40C; inlet is 23C and exhaust is 33C for reference. My GPU, however, is at ~62C.

How can I "unlock" the fan speed further?