Hint: Set the REDRAW to FALSE while you're drawing the table, and it will load quicker.

Code:
Option Explicit

Private Sub Command1_Click()
Dim i As Integer
flx.Redraw = False
For i = 1 To flx.Rows - 1
  If i Mod 2 = 0 Then
    With flx
      .FillStyle = flexFillRepeat
      .Row = i
      .RowSel = i
      .Col = 1
      .ColSel = .Cols - 1
      .CellBackColor = vbRed
      .CellForeColor = vbWhite
    End With
  End If
  Next i
flx.Redraw = True
flx.Row = 1
End Sub

Private Sub Form_Load()
  Dim i As Integer, j As Integer
  With flx
   For i = 1 To flx.Rows - 1
      For j = 0 To .Cols - 1
        .TextMatrix(i, j) = i & ", " & j
      Next j
  Next i
  End With
End Sub