I agree with NixXSkate
Needs a way to change the quality. Nowadays just about every submission has something to change the quality whether it needs it or not. It doesn't take much effort to set up, and the worst that can happen is nothing.
I'm personally stuck on my parents' old (6 or 7 years) computer while my monster of a machine gets repaired, so I'm stuck.
The only real problem is Beat Masher. First day of a class i had learning about Flash, the first thing the prof said was "Gradients and fading will slow you down the most, so plan ways around them." Beat Masher used 7 large gradients that faded away slowly. Ouchies. Basically everything ran smoothly until I pressed one of the keys and then it all went to hell.
Disk Jockey was unreasonably difficult in the end (not because of lag, that went rather smooth), but that was ironically my absolute favorite one to play over and over again despite only ever getting bronze.