Batch Photomerge Script

Good afternoon all. 

I am struggling with a a batch photomerge script. Using PS2023

I want to run a photoshop script that will search through a series of subfolders and find folders ending in _Merge and will merge all .tifs in that folder. IT should output as an uncompressed tif. 

I am able to do this for the most part thanks to copying code from several different forum posts that people have previously posted. The only thing is I have unsighly white border areas along the ouside of some of the edges of the tiffs. If I use photomerge the manual way I can use the content aware fill and it works great but its not allowing me to do this via a script. 

Does anyone know of a work around for this? 

Also my files are ending up very big compared to if I use the manual photmerge action. Very often several times the size of the tifs I use to create the merge.?

Here is the code and hopefully it can be of use to someone else also.

Many thanks

// https://graphicdesign.stackexchange.com/questions/125106/multiple-panorama-automation-in-photoshop
// https://graphicdesign.stackexchange.com/questions/129569/batch-photomerge-only-process-images-in-folder-with-specific-title
var runphotomergeFromScript = true; // must be before Photomerge include
//@includepath "/C:\PSTEST\scripts/"
//@include "Photomerge.jsx"
//@show include

var psdOpts = new PhotoshopSaveOptions();
psdOpts.embedColorProfile = true;
psdOpts.alphaChannels = true;
psdOpts.layers = true;

(function()
{
    var workFolder = Folder.selectDialog();
    if (workFolder == null) return false;

    var folders = getSubfolders(workFolder, 'Merge');

    if (folders.length == 0) return false

    for (var i = 0; i < folders.length; i++)
    {

        var fList = folders[i].getFiles('*.tif');
        if (fList.length == 0) continue;

        // override Photomerge.jsx settings. Default is "Auto". Uncomment to override the default.
        photomerge.alignmentKey = "Auto";
        //photomerge.alignmentKey   = "Prsp";
        //photomerge.alignmentKey   = "cylindrical";
        //photomerge.alignmentKey   = "spherical";
        //photomerge.alignmentKey   = "sceneCollage";
        //photomerge.alignmentKey = "translation"; // "Reposition" in layout dialog   

        // other setting that may need to be changed. Defaults below
        photomerge.advancedBlending = true; // 'Blend Images Together' checkbox in dialog
        photomerge.lensCorrection = true; // Geometric Distortion Correction'checkbox in dialog
        photomerge.removeVignette = true; // 'Vignette Removal' checkbox in dialog

        try
        {
            if (fList.length > 1)
            {
                photomerge.createPanorama(fList, false);
            }
        }
        catch (e)
        {
            alert(e + '\nLine: ' + e.line)
        }

        // https://stackoverflow.com/questions/45771379/how-can-i-merge-visible-to-a-layer-in-a-photoshop-script
        activeDocument.mergeVisibleLayers();
        activeDocument.activeLayer.autoContrast(); // Apply contrast

        // saving
        var saveFile = {
            name: folders[i].name,
            path: fList[0].parent
        }

        //savePSD(saveFile)
        //saveJPG(saveFile)
		saveTIF(saveFile)

        activeDocument.close(SaveOptions.DONOTSAVECHANGES);
    }
})()

function saveTIF(data)
{
    var desc = new ActionDescriptor();
    var descOptions = new ActionDescriptor();
    descOptions.putEnumerated(charIDToTypeID('BytO'), charIDToTypeID('Pltf'), charIDToTypeID('Mcnt'));
    descOptions.putEnumerated(stringIDToTypeID('layerCompression'), charIDToTypeID('Encd'), stringIDToTypeID('RLE'));
    desc.putObject(charIDToTypeID('As  '), charIDToTypeID('TIFF'), descOptions);
    desc.putPath(charIDToTypeID('In  '), new File(data.path + "/" + data.name + ".tif"));
    executeAction(charIDToTypeID('save'), desc, DialogModes.NO);
}; // end of saveTIF()
	





function getSubfolders(folder, mask)
{ // folder object, RegExp or string  
    if (mask == undefined) mask = "";
    var sFolders = [];
    var targetFolders = [];
    sFolders[0] = folder;
    for (var j = 0; j < sFolders.length; j++)
    {
        var procFiles = sFolders[j].getFiles();
        for (var i = 0; i < procFiles.length; i++)
        {
            if (procFiles[i] instanceof Folder)
            {
                if (procFiles[i].fullName.search(mask) != -1) targetFolders.push(procFiles[i]);
                sFolders.push(procFiles[i]);
                getSubfolders(procFiles[i], mask);
            }
        }
    }
    return targetFolders
} // end of getSubfolders()