property Options: TRenderOptions;
Set of rendering hints (anti-aliasing, LCD optimization, no native text, etc.).
Defaults to [reSmoothText, reSmoothImage, reSmoothPath]; toggle reLcd or rePrinting to tune the output.
All TPdfView display properties trigger a repaint when assigned; you can change several in sequence without flicker because the redraw is coalesced into a single invalidation.
Active := True.PdfView1.Pdf at runtime, re-apply any view-only settings — the new TPdf has its own state.
begin
PdfView1.Options := {value};
PdfView1.Active := True;
end;