Any way to power down GPU when not in use by VM?

Like the title says - any way to power down GPU when not in use by VM? (small annoying noisy fan on my low profile card).

My system specs:

CPU: AMD Ryzen 7 1700X
Mobo: B450 MSI Gaming Plus Max
RAM: 16GB of DDR4 (G.SKILL Ripjaws V Series 16GB, 2 x 8GB DDR4 3200)
GPU: AMD FirePro v3900

I recently upgraded from unraid 6.9 to 6.11 and noticed my GPU doesn't really ever turn off when my VM (with GPU passthrough) is stopped. The GPU will idle, but I can still hear the fan on it.

I will admit, this probably seems like a strange post, but my GPU is a low profile card (AMD Fire Pro v3900) and the small fan is a little annoying when idling. I sit next to the server all day so I'm wondering if there is a way to power the GPU down when it's not in use. I have considered running my server headless, but it's nice to test VMs and access the BIOS every once in awhile without having to shut it all down and install the GPU.

What's strange is that when I was on v6.9, and I would boot up my server, the GPU would spin up and be very noisy. I could start my VM (configured with passthrough) and then force stop it and the GPU would essentially shut itself down. I will admit, the behavior I saw while on v6.9 was probably a bug, as I was not able to get GPU passthrough to work properly, but I figured that it was due to the drivers not being a part of the kernel on v6.9, and my plan was to get a ROM for the GPU and see if that would have helped. Unfortunately, I never had the time to do that, so I'm not sure if it would have helped.

With v6.11, GPU passthrough works with my card (yay!), but when stopping my VM the GPU goes into an idling mode (with annoying fan noise), where in v6.9 it would power off completely. I will admit, the working GPU passthrough and idling for this card in v6.11 are probably working as intended, and some bugs were probably worked out along the way - I appreciate all the work the devs do with unraid. But, is there a way to power off a GPU completely while the server is running and then power it back on when needed? (Maybe a command I can run?)

Thank you for such a great product and all the help I've picked up from this forum. It is much appreciated!