asp.net core 2 Identity Authentication kicking me to login before cookie expiration

Question

My identity authentication setup seems to ignore the .AspNetCore.Identity.Application cookie after it exceeds browser session or something else (at around 30 minutes). I can set the application cookie expiration to shorter periods like 1 minute, and that will work as expected, but when I try something like 10 hours, something else forces a logout by 30-ish minutes. I can't tell which part is causing the log out. I set IsPersistant to true by checking Remember Me. I can see the cookie in the browser, and the expires/Max-Age is being set to 10 hours, and doesn't disappear when I get kicked to the login.

looked at this(and many similar questions) ASP.NET Core MVC: setting expiration of identity cookie

used this for ajax actions Handling session timeout with Ajax in .NET Core MVC

Startup.cs

   services.AddIdentity<EntityFramework.ApplicationUser, IdentityRole>()
                .AddEntityFrameworkStores<ApplicationDbContext>()
                .AddDefaultTokenProviders();

   services.Configure<IdentityOptions>(options =>
            {
                //password options
                options.Password.RequiredLength = 8;
                options.Password.RequiredUniqueChars = 3;

                //Lockout options
                options.Lockout.DefaultLockoutTimeSpan = TimeSpan.FromMinutes(5);
            });

services.ConfigureApplicationCookie(options =>
            {
                //timeout span
                options.Cookie.Expiration = TimeSpan.FromHours(10);
                options.ExpireTimeSpan = TimeSpan.FromHours(10);
                options.Cookie.MaxAge = TimeSpan.FromHours(10);
                options.LoginPath = "/Account/Login";

                //https://stackoverflow.com/questions/55344665/handling-session-timeout-with-ajax-in-net-core-mvc
                options.Events.OnRedirectToLogin = (context) =>
                {
                    //identify if Ajax (json request)
                    if (context.Request.ContentType != null && context.Request.ContentType.Contains( "application/json"))
                    {

                        context.HttpContext.Response.StatusCode = 401;
                    }
                    else
                    {
                        context.Response.Redirect(context.RedirectUri);
                    }
                    return Task.CompletedTask;
                };
            });
   services.AddAuthentication(options =>
            {
                options.DefaultScheme = IdentityConstants.ApplicationScheme;
            })

In my Login action

await _signInManager.PasswordSignInAsync(model.Email, model.Password, model.RememberMe, lockoutOnFailure: false);