Hello, Tested on Teechart Pro v2021.32.210430 32 bits with Delphi 10.3 There is an old bug (reproduced in old version) when in a TPieSeries, which contain a certain number of records, if you set ExplodeBiggest for example : ExplodeBiggest = 20 => This take a lot of CPU to display/redraw Teechart Eas...