A script sharpens PowerShell ISE

UseLayoutRounding.psm1

# Install (simple way)
# Write this code to "%USERPROFILE%\Documents\WindowsPowerShell\Microsoft.PowerShellISE_profile.ps1"
# Install (module way)
# Place this script to "%USERPROFILE\Documents\WindowsPowerShell\Modules\UseLayoutRounding\UseLayoutRounding.psm1" and
# write "Import-Module UseLayoutRounding" to Microsoft.PowerShellISE_profile.ps1

Add-Type -TypeDefinition @"
using System;
using System.Collections.Generic;
using System.Reflection;
using System.Threading;
public static class UseLayoutRounding 
{
    public static void Setup(object psISE)
    {
        var host = psISE.GetType().Assembly.GetType("Microsoft.Windows.PowerShell.Gui.Internal.PSGInternalHost");
        var mainWindowField = host.GetField("mainWindow", BindingFlags.NonPublic | BindingFlags.Static);
        var mainWindow = mainWindowField.GetValue(null);
        var useLayoutRoudingMethod = mainWindow.GetType().GetProperty("UseLayoutRounding").GetSetMethod();

        var syncCtxField = host.GetField("synchronizationContext", BindingFlags.NonPublic | BindingFlags.Static);
        var syncCtx = (SynchronizationContext) syncCtxField.GetValue(null);

        syncCtx.Post(x =>
            {
                useLayoutRoudingMethod.Invoke(mainWindow, new object[] {true});
            }, null);
    }
}
"@

[UseLayoutRounding]::Setup($psISE)