I fixed the displacement warping issue by taking the file into Photoshop and softening the contrast around the warped area, but leaving the rest as it was. This leaves the rest of the arm with the desired amount of detail from the displacement map, while giving the previously-warped section a reduced effect.

However, saving the .exr out from Photoshop heavily reduced the contrast of the map, so it took a bit of time to get all of the settings correct to give the arm a look that is consistent with the rest of the model.

I've got all of my displacement maps in Maya and applied to my model. Each of the materials had to be tweaked here and there to give the Giant a consistent look although I'm going to need to make further changes to his left upper arm (the right upper arm from this renders view) as there's some noticeable stretching if the settings are too high. I'll be experimenting with a few ideas I have to fix this issue and post what does/doesn't work.

I've been working a lot to create a good medium between render quality and render time to give myself something more manageable, and I've been able to lower the render time down from 3:04 to 0:38 with no real noticeable drops in quality.

The lighting I have set up currently in my scene is pretty harsh so I can clearly see the effects of my displacement maps as I apply and edit them.

I doubt this process will take too much longer and then I can finally get onto rigging!

I have finished refining the rest of the character by creating extra definition and adding interest around the Giant's body. I found that the wood and the moss looked very separate so I went over the body again, painting in moss to help give the Giant a more aged and blended look. While painting, I referenced a lot of moss-covered trees and thought a lot about where I imagined the moss might form naturally.

I have begun moving everything back over into Maya, beginning with the textures and Mudbox paint layers. I need to bring over the displacement maps to give the mesh its detail, as it's currently at a very low subdivision level, but this will be very back-and-forth between Mudbox and Maya as the settings can be somewhat fiddly. I'll be uploading test renders as I go, and once all of the displacements are set up I'll render out a turnaround of the Giant in its default pose before moving on to rigging.

While working in Mudbox I ran into the same problem as before a couple of times, in which the software crashed and corrupted my files, causing me to lose a lot of my progress. I have been keeping several copies of my files so it wasn't quite as bad as it could have been, but it set me back a couple of days overall. I think it has a lot to do with RAM as my memory is frequently reaching around 80%, despite having 16GB. Is there any way to lower Mudbox settings within the Viewport other than lowering the subdivision level?

Front

3/4

Bottom

With Paint-Over

Without Paint-Over

I've finished texturing the horns and refined the face with a paint-over to create definition and interest. I now need to go over the Giant's body with a similar paint-over to further refine it and then take everything over to Maya to begin rigging.

Progress update for the texturing of my Giant model. I have finished blocking in all parts of its body and began adding shadows and highlights on the wood to create interest and stop the entire model from looking flat, although I still need to do this for the mossy materials.

I haven't finished detailing the head yet as I still need to texture the horns which take up a large portion of the Giant's face - I'll go back to the face once this is done so I can better gauge what needs to be changed.

I had an issue a couple days ago that caused Mudbox to crash and corrupt the file I was using without any pop-up message or notification of any kind. Fortunately I had a backup that wasn't too far behind my main save file. If anyone knows what might have caused this, please let me know.

I've had a hard time figuring out the Mudbox > Photoshop > Mudbox pipeline but I've finally got it all worked out and am making quick progress with my Giant model using photo textures, both in Photoshop and as stamps in Mudbox.

These are only screenshots taken in Mudbox but I'll be applying the textures in Maya and running some test renders soon.