Ok thanks.
I dug into this thread and the solution is here
So in order to be sure i re-downloaded Chaos Breaker from archive.org and followed what Houb announced 1 year ago.
Under Game Loader you should set dg and enable Reshade under loader settings 3 tab , i also thicked Full resolution.
Pay attention to texture_size value under CRTGeomMod.ini that should be texture_size=320.000000,240.000000 , this value could be copied from the settings of the "official" shaders provided here.
Finally i got rid of all the issues i had and i can use Game Loader that seems to be more reliable.
I would like to suggest to the thread's owner, if could be possible to update the first page of the thread adding Game Loader section,