tktable for Tcl/Tk http://tktable.sourceforge.net/ is optimized for good performance.

So if you'll move to Tcl::Tk then you will gain performance.

Compared to perl/Tk, Tcl::Tk is better WRT performance in many ways, see for example Comparing Tcl::Tk and perlTk WRT speed

In reply to Re^2: perl/Tk and expandable widgets by Courage
in thread perl/Tk and expandable widgets by Elijah

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