Speed slowing down gradually

[Hashah2311]

Hello, I have been running the app and I have noticed that when the app is creating words, its speed gradually decreases. From 10000/s to mere 200-300/s.
Hence it takes a very long time to gen like 1 mil words. What am I doing wrong?

Atthis point, the script is running for 1 hour.
I have tried running it as an administrator too.
My SetUp - Python 3 (env), Windows 11, interactive mode, default config