Nick, Great Post !! It is good to know that we have to allocate more memory to utilize R functionality in 2016.

Try something like this

DECLARE @TaskOutFile VarChar(255)

select * from dbo.Table where ID=@ID

Select @TaskOutFile = 'C:\ABC\' + @ID + '.html'

EXEC sp_makewebtask @outputfile = @TaskOutFile, @query = 'select * from dbo.Table where...