@neighbourhood nerd
Thank you! I change the settings in the /boot/config.txt settings and splitt the memory. My first Setting was gpu_mem=384 it works but i have Lags in sound and gameplay of the PSX Games. Now, i try to give more memory. The maximum i can give for the Raspberry Pi b+ was 448 but to much! The Games dosent start any more!Also 415 is to much, the Games become more Lags then at the beginning.
Now i try gpu_mem=408 and the sound in MetalslugX is wonderfull! Also the Gameplay, i have no Lags!
In FanalFantasy7 was the gameplay also wunderfull! The sound is much better! Not Perfect near to be perfect:)
I try to tweak the retroarch.cfg now. Maybe i can get the maximum out!
Here My config:(/boot/config.txt)
arm_freq=1050
gpu_mem_512=408
core_freq=500
#h264_freq=0
#isp_freq=0
#v3d_freq=0
gpu_freq=500
avoid_pwn_pll=1
sdram_freq=550
over_voltage=6
avoid_safe_mode=1
force_turbo=0
