PnPSiteTemplate too slow after updating Microsoft.Graph

[TiagoSantosOrbcom]

Description

We have a C# .NET 8 application that during a process is using Microsoft.PowerShell.SDK to take advantage of the PnP Provisioning Engine of the PnP.PowerShell module and we export the website template using the Get-PnPSiteTemplate command. This process has an estimated time of 30 minutes, however, after updating the "Microsoft.Graph" Nugget from version 4.* to version 5.51.0, the estimated time increased substantially to 2 hours of execution.

Expected behavior

The expected behavior after executing the entire process after updating would be to improve the execution time or maintain the execution time.

Actual behavior

The current behavior is to execute the process in the estimated time of 2 hours.

Steps to reproduce behaviour

1. Create a C# .NET 8 project;
2. Install the mentioned Nugget Packages;
3. Install the Modules in PowerSheel;
4. Implement the mentioned code replacing the variables with the correct values;
5. Execute code;

Project Nugget Package

Microsoft.Graph (5.51.0)
Microsoft.Kiota.Abstractions (1.8.4)
Microsoft.PowerShell.SDK (7.4.2)
PnP.Framework (1.15.0)
System.Management.Automation (7.4.2)

PowerShell Module

PnP.PowerShell (2.3.0)
Microsoft.Graph (2.18.0)

PowerShell Command

Get-PnPSiteTemplate -Out C:\temp\teste.pnp -Handlers All -PersistBrandingFiles -PersistPublishingFiles -ExcludeHandlers "SiteSecurity" -Force

Code

private PowerShell ConnectTo(string siteName)
{
    try
    {
        PowerShell powerShell = PowerShell.Create(this._runspace);
        powerShell
            .AddCommand("Connect-PnPOnline")
            .AddParameters(new Dictionary<string, object>
            {
                ["Url"] = $"{siteName}",
                ["Credential"] = this._psCredential
            })
            .Invoke();
        powerShell.Commands.Clear();
        return powerShell;
    }
    catch (Exception ex)
    {
        this._logger.Error(ex.Message);
        return null;
    }
}

private bool Disconnect(PowerShell powerShell)
{
    try
    {
        powerShell.AddCommand("Disconnect-PnPOnline");
        powerShell.Invoke();
        powerShell.Commands.Clear();
        powerShell.Dispose();
        return true;
    }
    catch (Exception ex)
    {
        this._logger.Error(ex.Message);
        return false;
    }
}

public void ApplySiteTemplate(PnPSite pnpSite)
{

    bool isSuccessGetTemplate = false;
    bool isSuccessInvokeTemplate = false;

    string tenantModeloUrl = $"{this._tenantUrl}sites/{pnpSite.SiteNameTemplate}/";
    string tenantNewSiteUrl = $"{this._tenantUrl}sites/{pnpSite.SiteName}";

    DateTime dateTime = DateTime.Now;
    string filename = "xmlSchema";
    filename += $"{dateTime.Year}";
    filename += $"{("00" + dateTime.Month.ToString()).Substring((dateTime.Month.ToString().Length + 2) - 2, 2)}";
    filename += $"{("00" + dateTime.Day.ToString()).Substring((dateTime.Day.ToString().Length + 2) - 2, 2)}";
    filename += $"{("00" + dateTime.Hour.ToString()).Substring((dateTime.Hour.ToString().Length + 2) - 2, 2)}";
    filename += $"{("00" + dateTime.Minute.ToString()).Substring((dateTime.Minute.ToString().Length + 2) - 2, 2)}";
    filename += $"{("00" + dateTime.Second.ToString()).Substring((dateTime.Second.ToString().Length + 2) - 2, 2)}";
    filename += $"{dateTime.Millisecond}";
    filename += $".pnp";

    PnPFile pnpFile = new PnPFile()
    {
        Filename = $"{filename}",
        Folder = $"{this._pathXml}"
    };

        // Connect to Module SPOService via PowerShell
        PowerShell powerShell = this.ConnectTo(tenantModeloUrl);
        if (powerShell == null)
            throw new ConnectionException("Couldn't connect to specific sharepoint online service.");

        // Gerar pnp file
        isSuccessGetTemplate = this.GetPnPSiteTemplate(powerShell, pnpFile);

        // Disconnect from Module SPOService via PowerShell
        if (!this.Disconnect(powerShell))
            throw new ConnectionException("Couldn't disconnect from sharepoint online service.");

        if (isSuccessGetTemplate)
        {
            // Connect com o novo site tenant
            powerShell = this.ConnectTo(tenantNewSiteUrl);
            if (powerShell == null)
                throw new ConnectionException("Couldn't connect to specific sharepoint online service.");

            isSuccessInvokeTemplate = this.InvokePnPSiteTemplate(powerShell, pnpFile);

            // Disconnect from Module SPOService via PowerShell
            if (!this.Disconnect(powerShell))
                throw new ConnectionException("Couldn't disconnect from sharepoint online service.");
        }
    }
}

private bool GetPnPSiteTemplate(PowerShell powerShell, PnPFile pnpFile)
{
    try
    {
        string path = $"{pnpFile.Folder}{pnpFile.Filename}";
        Collection<PSObject> results = powerShell
            .AddScript($"Get-PnPSiteTemplate -Out {path} -PersistBrandingFiles -PersistPublishingFiles -ExcludeHandlers \"SiteSecurity\" -Force")
            .Invoke();
        CheckErrors(powerShell);
        powerShell.Commands.Clear();
        return true;
    }
    catch (Exception ex)
    {
        this._logger.Error(ex.Message);
        if (powerShell != null)
            powerShell.Commands.Clear();
        return false;
    }
}

private bool InvokePnPSiteTemplate(PowerShell powerShell, PnPFile pnpFile)
{
    try
    {
        string path = $"{pnpFile.Folder}{pnpFile.Filename}";
        Collection<PSObject> results = powerShell
            .AddScript($"Invoke-PnPSiteTemplate -Path \"{path}\"  -ClearNavigation -Handlers \"All\"")
            .Invoke();
        CheckErrors(powerShell);
        powerShell.Commands.Clear();
        return true;
    }
    catch (Exception ex)
    {
        this._logger.Error(ex.Message);
        if (powerShell != null)
            powerShell.Commands.Clear();
        return false;
    }
}