Created attachment 764 [details]
Sample project to reproduce the bug

I get an EOutOfMemory exception displaying a 3D surface with my data. Luckily I was able to track down the problem to a few lines of code:

- create a VCL forms application
- drop a TChart onto the form
- add a 3D surface series
- execute the code below

var
  I: Integer;
  J: Integer;
begin
  Series1.Clear;
  for I := 10 to 100 do begin
    for J := 1 to 100 do begin
      Series1.AddXYZ(I*10, Random(10), J*100000);
    end;
  end;
end;

When the series is going to be displayed the app memory goes beyond 1.5 GB and throws an exception.

The problem seems to be related to the large X- and Z-values. Everything is OK when the factor is removed and lower numbers are used.