Ok, to answer myself and maybe others:
The problem clearly was / is the CPU Power.
I overclocked my q6600 to 3100 MHZ, and now i can play WiiWare without slowdowns and Mario nearly 100 % smooth.
Time for a CPU upgrade
The problem clearly was / is the CPU Power.
I overclocked my q6600 to 3100 MHZ, and now i can play WiiWare without slowdowns and Mario nearly 100 % smooth.
Time for a CPU upgrade