Lags just on the very first launch after reboot

[psytekk]

Hello,

here is my problem :

On the very first start of hyperspin the intro video lags as well as the wheels.
after 1 minutes the application is stable and does not lag.
If I close the application and relaunch it, everything goes perfectly, no lag to start.
If I restart windows the problem comes back.

I see that the CPU load is higher on the very first boot for the hyperspin process. If I close the application and relaunch, the CPU load is lower to start.
if I restart the PC, the CPU load is high again for the process hyperspin.
It's quite annoying when it comes to an arcade cabinet with automatic launch of hyperspin ^^;

Do you know what is the difference between the very first launch of the application after windows startup and the following startups of hyperspin?

Thanks to help me :)