thankx for the fast reply. I understand the reason why a permanent boost is not desired ... .. with the mind of the developer team cause in same cases when running all games for example with 200 % thy may crash freez or will show up with some other strange problems....
But i have some builts where it were so helpfull and comfortabel, cause the chosen games are all running complete without any probs at 165 %. I checked it ... So on my mame cab it is just a question of convenience to start it up choose the game and lets play but in my case i have this small additonal step to got ... to speed up mame.
Sorry i am not familiar with compiling and so on ....