I am sharing
CIU v3.0.0.1.b5 
here so that more users can test and report the bugs found.
In this version there is a slight performance gain when the conversion is simpler (basic design).
I left PROGRESSBAR mode on so that more lay users could view the full screen functions without having to change the script.
To use the source code, just put ";" (without quotes) at the beginning of line 7 of the script like this:
;#define PROGRESSBAR 1000
You can compile using
Inno Setup [Repack].
Lite: Original Inno Setup + RESTOOL Interface (Selectable)
Full: Original Inno Setup + RESTOOL Interface + Various Additional Software + .cjstyles skins package (Optional Download). (All Items Selectables).
There is a visible bug in 4K monitors with windows magnification of 300% (scale and layout) when specified background or video in 1280x720 displays in full screen (If placing 200% displays correctly).
Thanks!