Blocking the refresh of photoshop

Thanks David... now it makes sense.

So I assume that scripts in modern Photoshop are accelerated by default.

var idsetd = charIDToTypeID( "setd" );

var desc3 = new ActionDescriptor();

var idnull = charIDToTypeID( "null" );

var ref2 = new ActionReference();

var idPrpr = charIDToTypeID( "Prpr" );

var idPbkO = charIDToTypeID( "PbkO" );

ref2.putProperty( idPrpr, idPbkO );

var idcapp = charIDToTypeID( "capp" );

var idOrdn = charIDToTypeID( "Ordn" );

var idTrgt = charIDToTypeID( "Trgt" );

ref2.putEnumerated( idcapp, idOrdn, idTrgt );

desc3.putReference( idnull, ref2 );

var idT = charIDToTypeID( "T   " );

var desc4 = new ActionDescriptor();

var idperformance = stringIDToTypeID( "performance" );

var idperformance = stringIDToTypeID( "performance" );

var idaccelerated = stringIDToTypeID( "accelerated" );

desc4.putEnumerated( idperformance, idperformance, idaccelerated );

var idPbkO = charIDToTypeID( "PbkO" );

desc3.putObject( idT, idPbkO, desc4 );

executeAction( idsetd, desc3, DialogModes.NO );