Good, so it's not a machine issue.
I think you are mixing GDI and GDI+ text rendering in you application.
"Application.SetCompatibleTextRenderingDefault(true);" will set WinForms controls to use GDI+ text rendering but "TextRenderer" uses GDI text rendering, also setting "e.Graphics.TextRenderingHint" is for GDI+ it has no effect on "TextRenderer.DrawText".
you should probably use "Application.SetCompatibleTextRenderingDefault(false);".
But all this have nothing to do with HtmlRenderer...
Are you sure setting "UseGdiPlusTextRendering=true" did nothing?
can you create a new plain form, add HtmlPanel to it and see what happens.
I think you are mixing GDI and GDI+ text rendering in you application.
"Application.SetCompatibleTextRenderingDefault(true);" will set WinForms controls to use GDI+ text rendering but "TextRenderer" uses GDI text rendering, also setting "e.Graphics.TextRenderingHint" is for GDI+ it has no effect on "TextRenderer.DrawText".
you should probably use "Application.SetCompatibleTextRenderingDefault(false);".
But all this have nothing to do with HtmlRenderer...
Are you sure setting "UseGdiPlusTextRendering=true" did nothing?
can you create a new plain form, add HtmlPanel to it and see what happens.