Flickering triangle textures super monkey ball 2

[Magichost]

On the second level in the lava stage, the mountain textures flicker pretty badly.  If I disable fast depth calculation then it mainly fixes it but causes other problems.  For instance the shadow under the ball will flicker and the whole story intro at the beginning of a new game flickers like crazy and is unwatchable.  I am using opengl backend on Android 11.  And yes I've tried toggling almost all settings.  It may be a texture offset problem with not enough precision in z-buffer?