System overload

I have a Windows 11 pro 64bit PC, 64GB RAM, 8TB SSD storage, 12 processors, very powerful system, it handles almost anything in Cubase 14 Pro. With Scaler 3, I have 4 (scaler) tracks, 1 with the internal sound and 4 vst’s. My system overloads and causes distortion and dropouts.
Can you please make it more efficient ? Surely scaler should be able to manage more than 5 tracks without issue ? This makes the internal track system unusable if it falls over after only a few tracks