just an idea, create your own pdf :
1. export report to image
2. attach image to pdf, using iTextSharp
3. don't use it to report with many pages, causes high cpu usage, memory usage, and request timeout
create another project, WebApi with classic dotnet framework, from dotnet core, redirect to classic webapi
        public ActionResult Pdf(string file, string label)
        {
            string page = string.Concat("http://localhost/classic/pdf/", file, "/", label);
            return Redirect(page);
        }
Comments
I search in forum and didn't get any help.
Please an example of custom pdf export
2. find in demo folder
3. search forum
4. use google
How embed font??
1. export report to image
2. attach image to pdf, using iTextSharp
3. don't use it to report with many pages, causes high cpu usage, memory usage, and request timeout
or
waiting for next version release...in pain