[issue43511] Tk 8.6.11 slow on M1 Mac Mini MacOS Python 3.9.2 native ARM version

[Thomas Wamm]

Thomas Wamm <thomaswamm at gmail.com> added the comment:

An easy demo of the performance problem is to compare the execution speed of the single command: 

>>> help('modules')

in a python3 shell in a terminal window (it's real fast), 
vs. inside the IDLE3 shell (it's terribly slow).

I understand that IDLE3 uses the tkinter.py/Tcl/Tk toolset for windowing. There's something slowing it down on the M1 Mac Mini (MacOS 11.2.3), making it run much slower than on a Wintel PC or Linux Raspberry Pi.

I don't know if the problem occurs with any Python versions other than 3.9.2 on MacOS.

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