Ventura 13.0.1 MBP M1Max MagnificationGesture stops working at random. Ventura did not fix this. Has anyone found a work-around?

I'm having the most frustrating time trying to get SceneKit to render custom geometry on Monterey on an MBP M1Max. After some mucking about, I'm starting to suspect that the internal floating point representation has shifted to 64-bit?!? I'm wondering if this is also the case for element buffers, because rendering with UInt32 element arrays is FUBAR. Unfortunately, SceneKit won't allow me to create 64-bit element arrays.