My Script is Crashing after effects

Hello,

i am trying to automate some of the more repetitious tasks in our workplace, 

i have put together this script that changes all the fonts in an after effects project

the script does work and succesfully changes the font, only problems is that when there is > 20 text layers the script crashes after effetcs.

the crash log states "EXCEPTION_ACCESS_VIOLATION"

and i have got an error message in after effects stating that it take to much ram to draw that frame,

is this a limit in after effetcs I wont be able to get around or is there a way to better optimise the code 

Please see script below 

var scriptName = "SBS replace font";
var NumOccurance = 0;
var layer;
var textLayer;
var ChosenFont;


function OnArabic() 
{
ChosenFont = "Dubai"
}

function onMandarin() 
{
ChosenFont = "Noto Sans"
}

function onEnglish() 
{
ChosenFont = "Ubuntu"
}

function ReplaceFont() 
{
    NumOccurance = 0;

    app.beginUndoGroup("textToArabic");

    for (var i = 1; i <= app.project.numItems; i++) 
    {
        if (app.project.item(i) instanceof CompItem) 
        {
            for (var x = 1; x <= app.project.item(i).numLayers;x++) 
            {
               if(app.project.item(i).layer(x).sourceText != null) 
               {
                layer = app.project.item(i).layer(x);   
                NumOccurance ++
                textLayer = layer;
                var textDoc = new TextDocument("New text");
                var textProp = layer.property("Source Text");
                textDoc = textProp.value;
                textDoc.font = ChosenFont;
                
                
                textProp.setValue(textDoc);
			   }
                //app.project.item(i).layer(x).property("Source Text").setValue(textDoc.font);
            }
        }
    }

   
    
    app.endUndoGroup();
    alert("script has completed, " + NumOccurance + " text objects updated");
}

function RunScript(thisObj) 
{
    function BuildAndShowUI(thisObj)
		{
			// Create and show a floating palette.
			var my_palette = (thisObj instanceof Panel) ? thisObj : new Window("palette", scriptName, undefined, {resizeable:true});
			if (my_palette != null)
			{
				var res = 
					"group { \
						orientation:'column', alignment:['fill','top'], alignChildren:['left','top'], spacing:5, margins:[0,0,0,0], \
						introStr: StaticText { text:'Change font to:', alignment:['left','center'] }, \
						optsRow: Group { \
							orientation:'column', alignment:['fill','top'], \
							Arabic: RadioButton { text:'Arabic', alignment:['fill','top'], value:'true' }, \
							Mandarin: RadioButton { text:'Mandarin', alignment:['fill','top'] }, \
							English: RadioButton { text:'English', alignment:['fill','top'] }, \
						}, \
						cmds: Group { \
							alignment:['fill','top'], \
							okButton: Button { text:'Replace font', alignment:['fill','center'] }, \
						}, \
					}";
				
				my_palette.margins = [20,20,20,20];
				my_palette.grp = my_palette.add(res);
				
				// Workaround to ensure the edittext text color is black, even at darker UI brightness levels.
				var winGfx = my_palette.graphics;
				var darkColorBrush = winGfx.newPen(winGfx.BrushType.SOLID_COLOR, [0,0,0], 1);
				//my_palette.grp.optsRow.text_input.graphics.foregroundColor = darkColorBrush;
				
				my_palette.grp.optsRow.Arabic.onClick  = OnArabic;
				my_palette.grp.optsRow.Mandarin.onClick  = onMandarin;
				my_palette.grp.optsRow.English.onClick = onEnglish;
				
				
				my_palette.grp.cmds.okButton.onClick = ReplaceFont;
				
				//my_palette.onResizing = my_palette.onResize = function () {this.layout.resize();}
			}
			
			return my_palette;
		}

        
        var my_palette = BuildAndShowUI(thisObj);
		if (my_palette != null) 
		{
			if (my_palette instanceof Window) 
			{
				my_palette.center();
				my_palette.show();
			} 
			else
			{
				my_palette.layout.layout(true);
				my_palette.layout.resize();
			}
		} 
        else 
        {
			alert("Could not open the user interface.", scriptName);
		}
    
}


RunScript(this);