Ok I am guessing we are ok to run the regular plan. If you only have a few columns this should actually run pretty quick. I was able to use your attached spreadsheet, duplicate the data 65,000 times and run this code. It took about 8 seconds to complete.
Here is the code
Code:
Option Explicit
Sub CountTrueValues()
'Inserts a column to the right of C and then runs
'a countif to see how many times the phrase true
'is entered in the columns
Dim CheckRow As Long, LastRow As Long, Tot As Integer
Dim LastCol As String
'Insert a column
Range("D:D").Insert
Range("D1").Value = "TRUE Count"
'Identify where to stop
LastRow = Range("C2").End(xlDown).Row
LastCol = Range("A1").End(xlToRight).Address
LastCol = Mid(LastCol, 2) 'remove first $
LastCol = Mid(LastCol, 1, InStr(1, LastCol, "$") - 1) 'remove the row
'Go through the data and enter a value
For CheckRow = 2 To LastRow
Tot = WorksheetFunction.CountIf(Range("E" & CheckRow & ":" & LastCol & CheckRow), "true")
Range("D" & CheckRow).Value = Tot
Next CheckRow
MsgBox "done"
End Sub
Let me know if this works or if you want to go about it a different way.