ToDataTable performance

[thehill383]

Apologies if this is vague, i am really struggling and looking for any help i can get.

i want to build an html table generator for IEnumerable, similar to LINQPad Dump, i am unable to use LINQPAD Dump at runtime, it is only allowed in debug
everything that i try seems to suffer from really bad performance issues probably due to the use of reflection.
I use MoreLINQ ToDataTable a lot but this wont work when a particular property is a collection, i need to be able to create nested html tables in the way that LINQPad Dump does, so what i want to do is build on top of ToDataTable and build the HTML table directly, and in the process handle properties that are collections

If i extract ToDataTable.cs and create an extension in my own project, then the performance is nothing like it is if i run it from MoreLINQ.
I realise i am giving absolutely nothing in the way of examples of what i am doing, but i wonder if you have any suggestions to what i am doing wrong if i try to create my own extension.