gswidgetkit VS AronimosConsistencyTracker

Here's a video of a demonstration of a generic button and my hand-made one (to be clear, part of the code is from this other project)

I have been working in this project for the past 2 weeks. It is a program to help speedrunners keep track of their consistency. In the future I plan on implementing notes, save progres to back it up, show progress through graphics and much more. Tho, I'm currently having a problem with this custom button I made. I didn't like the way the generic button of wxPython looked, so I ended up making a widget of my own. Problem is, for some odd reason it has a cap to how much time it can be pressed. I couldn't figure out what exactly caused this, but after hearing from some ppl, they said it was a thing of the code or with wxPython itself. The code is the following:

Hi fellow programmers! I'm currently making a slitghly big project on my own, it is a program to help speedrunners to set schedules, keep track of their consistency, show evolution through time, and much more. The program resides in its 0.3 version, which only has the consistency tracker feature. After creating this prototype in tkinter, many ppl liked the program, then I went serious with it and changed to wxPython. The problem is, I'm used to lightning fast program written in C and Lua, and Delphi from an internship. Both of these languages were the first ones I had contact with, and until last month were the only ones that I had some knowledge, specially Lua and its embedding capabilities into C/C++. My worries are if I should continue with the program in wxPython, because of faster coding, and the fact that it is my first non-personal project, plus the fact I've initiated in programming just 3 years ago; or if I should go C++ to save run time. What I want exactly to know or to discuss, is, as a begginer, should I focus on improving code or going for a faster language? One of the facts that made me rise this doubt was that a custom button I made using the Control class of wxPython simply has a limit of presses per second, even tho the users won't press it more than a few times at a time, literally capping the presses a user can do. In the main.pyw, theres a function to show RAM and CPU usage, what scares me the most, is that the program is using 68% of my 8GB RAM, but I may did something wrong to show the RAM usage, it is too much even for python