Big Sur, finally, But got a question, it looks like can only select 2 GPU cards in PR5 C4D?

It's great news for my work, but when i change texture of octane material, c4d crashed:

Application Specific Information:
validateMTLStorageMode:237: failed assertion `invalid storageMode (0). Must be one of MTLStorageModeManaged(1) MTLStorageModePrivate(2)'

Supposed to wait for an update?