Latency Nuendo 12 Avid MTRX Apple Mac Studio M1

I have big Problems with the latency on the headphone-mix for voice-over recordings. The MTRX has the latest firmware. The crazy thing ist, if I work with Nuendo 10 on the new Mac I get the best results ???. Now I work with protools where everything runs smooth, but I prefer Nuendo for many reasons

anyone has the same problems?