Memory is not release after each generation

### Custom Node Testing

- [ ] I have tried disabling custom nodes and the issue persists (see [how to disable custom nodes](https://docs.comfy.org/troubleshooting/custom-node-issues#step-1%3A-test-with-all-custom-nodes-disabled) if you need help)

### Expected Behavior

The memory should be deposed after each iteration.

### Actual Behavior

The memory doesn't get dispose.

### Steps to Reproduce

I used normal workflow from comfyui website

### Debug Logs

```powershell
The process is killed.
```

### Other

_No response_