@aerokeith , @spurlock , thanks for helping us to fix this issue.
I’ve just created a separate branch of PIO Core with debug information. Please open PlatformIO Core terminal in VSCode (terminal icon on the bottom status bar) and type:
pip install -U https://github.com/platformio/platformio-core/archive/refs/heads/feature/debug-dev-monitor.zip
pio device monitor
You will see a debug output with time frames. Please share it here.