Hello Poodster and Jan,
Thank you guys for the response!
For the first one, you are a genius! I do have an axis set to control the tiller; I find it more realistic when taxing, so I really hope IXEG can have a solution for this.
You are right again! I tried in HDG mode, and the bank limiter did work!
I will try to make a video so it is more clear to understand. Also I found out that not only ground service window that will stop CDU from updating display, but all IXEG menu and windows. More over, they not only stop CDU's display but all display including PFD and ND. I will try to include this in a video too.
My rendering settings are very low so Vram is really not an issue for me. I attached two pictures below to show this:
As you can see there's a blue bar on the left side of ND:
The color bar also appears in the preview when changing ND mode:
I really appreciate all the help! And I'll be here if you guys have more questions!