GPU mode on Steam

Hi,

Is it possible to get GPU mode on AIR for Desktop?

I have a game running in GPU mode on iOS and Android and would like to publish it to Steam (PC and Mac).The problem is that when using CPU or Direct render mode the game runs slower on the desktop than on a mobile device (where it runs perfectly smooth in 60 fps in GPU mode).

Is there any workarounds for this? Like a wrapper for an older Flash player with GPU mode or similar?

Thanks in advance!