Hi @Jaykul ,
The module creates the PSM1 as UTF8 no BOM in PS6+ but as UTF8 (with BOM) in WinPS 5.1.
Could we update the code here:
https://github.com/PoshCode/ModuleBuilder/blob/master/Source/Private/SetModuleContent.ps1#L38-L40

So we can Set the file content without the BOM in WinPS5.1?
I guess that you have some specific requirements here for perf, so what approach you think would work best?