Appium: failed to locate open application error - selenium

Question

I am using C#, Appium, and WinAppDriver to automate UI tests on a desktop application, however, I continue to have an intermittent issue when launching the WPF application. I have done a lot of research on this but cannot find a solid solution.
When opening the application there is a login splash screen. When the correct login credentials are entered there is another loading splash screen for approximately 5 seconds before the application opens.
I continue to get the following exception when opening the application; it appears to be random. Every time I think I found a pattern I find another data point that conflict with the pattern I thought I identified.
Exception
Message:
OpenQA.Selenium.WebDriverException : Failed to locate opened application window with appId: C:\Program Files (x86)\path to .exe\, and processId: 14124
Stack Trace:
RemoteWebDriver.UnpackAndThrowOnError(Response errorResponse)
RemoteWebDriver.Execute(String driverCommandToExecute, Dictionary`2 parameters)
AppiumDriver`1.Execute(String driverCommandToExecute, Dictionary`2 parameters)
RemoteWebDriver.StartSession(ICapabilities desiredCapabilities)
RemoteWebDriver.ctor(ICommandExecutor commandExecutor, ICapabilities desiredCapabilities)
AppiumDriver`1.ctor(Uri remoteAddress, ICapabilities appiumOptions)
WindowsDriver`1.ctor(Uri remoteAddress, AppiumOptions AppiumOptions)
Login code
if (session == null){
AppiumOptions appOptions = new AppiumOptions();
appOptions.AddAdditionalCapability("app", Path);
appOptions.AddAdditionalCapability("platformName", "Windows");
appOptions.AddAdditionalCapability("deviceName", "WindowsPC");
Thread.Sleep(TimeSpan.FromSeconds(5));
session = new WindowsDriver<WindowsElement>(new Uri(WindowsApplicationDriverUrl), appOptions);
Assert.IsNotNull(session);
Thread.Sleep(TimeSpan.FromSeconds(10));
var allWindowHandles = session.WindowHandles;
session.SwitchTo().Window(allWindowHandles[0]);
session.Manage().Timeouts().ImplicitWait = TimeSpan.FromMinutes(1);
//Enter password and login
session.FindElementByAccessibilityId("tbPwd").SendKeys("password");
session.FindElementByAccessibilityId("btnLogin").Click();
Thread.Sleep(TimeSpan.FromSeconds(5));
session = new WindowsDriver<WindowsElement>(new Uri(WindowsApplicationDriverUrl), appOptions);
session.Manage().Timeouts().ImplicitWait = TimeSpan.FromMinutes(1);
}
Tear down code after each test case
public void TearDown()
{
AppiumOptions appOptions = new AppiumOptions();
appOptions.AddAdditionalCapability("app", "Root");
session = new WindowsDriver<WindowsElement>(new Uri(WindowsApplicationDriverUrl), appOptions);
// Use the session to control the desktop
session.Keyboard.PressKey(Keys.Command + "r");
session.Keyboard.SendKeys(Keys.Null);
session.Keyboard.SendKeys(#"C:\path of taskkill file.bat"+ Keys.Enter);
//End current session instance
session.Dispose();
}