Up to last week I hadn't looked at Trackmania for many months - life had taken over.
Logged in today and was offered the StarEdition update 2.11.25 en - it would not install
last week, probably a faulty download, but today it did so and I have just tested the
first Track - Gold is straightforward, got Author after a while.
In answer to your question, it hasn't had much use yet, but it played without a hitch - no freezing anywhere.
Perhaps you should reinstall the StarEdition, or update your graphics drivers,
if you have not done this for a while.
Just looked on Trackmania site, out of interest:
Supported OS: Windows 2000/XP/XP-x64/Vista
Processor: Pentium IV 1.6GHz / AthlonXP 1600+
Graphics: 3D accelerator 16 MB DirectX 9.0c compatible graphics card
DirectX Version: DirectX 9.0c or better
Memory: 256 MB (512 MB with Vista)
Sound: 16 bit DirectX compatible sound card
Hard Drive: 1.5 GB free disk space