@senglit: Please post a zipped project so that we can see the issue ourselves. You should simplify your project as much as possible, but the flicker should remain, of course. Put the .pas, .lfm, .lpi and .lpr files into a common .zip which you can upload via "Attachements and other options" below the forum editor box. Do not include .exe, .ppu, .o, .res and other compiler-generated files, they are not needed and may make the upload exceed the file size limit of 250 KB.