Freezing and overall system performance are two different things. While we have only little influence on the second, we do our best to avoid system freezes. Until now, the only known source of freezes is the limited memory: if you use memory-intensive apps, the device runs out of GPU memory and dies. We don't have a solution for this yet, but if you leave the device running, it shoudn't be freezing (the device in my office is running for almost a week now). We will be happy to fix it if you can provide us more details on how we can reproduce your problem.
