delay with reason 4?

ok so theres a problem i know it because bomes keyboard never did this to me before, but i reinstalled midi yoke, bomes keyboard, and reason v4 and for some reason when i press a key on the keyboard, the sound delays when being played on reason v4. i have windows xp so if anyone knows whats going on please explain to me!

Usually, this is due to the soundcard settings in Reason. E.g. check that you're using ASIO, and choose a latency as low as possible.

Also, make sure that MIDI OUT in MK is set to Yoke and not to a synthesizer...

Regards,
Florian