Transparency + overlapping objects can lead to a situation with constant redrawing. In this case (LV14 SP1) I was able to tame it by coloring the housing a solid color and then recoloring it transparent.
Here is next version, compiled with LabVIEW 2018 SP1.
LabVIEW Shell Launcher 1.1.1
The PreferredBitness key is now in LabViewShell.cfg, created if necessary on first launch.
The LWZ Unpack algorithm is very slow in the OpenG implementation.
I found this post over in the NI forums and tested it with your image... much faster.
https://forums.ni.com/t5/Example-Program-Drafts/Read-GIF-File/ta-p/3514726
Edit: Set image to "-1" to load them all: