Ok I have the same issues with the input lag when using ati tool and the dynamic fan control. I only use ati tool for this feature so my question is this: does the latest version address this issue and if not, can I control the fan speed a different way that wont cause the stupid input lag? The x1900xtx get HOT and I like ati tool, but it is hard to play css when you have input lag for 3-4 seconds every 2 minutes. Please help me ASAP. Does .26 version fix this or what are some suggestions that might eliminate the input lag but still be able to use this great tool? Thanks! Does anyone know if ati tray tool works better in this department?