flux.1 dev Text Encode in very low cpu usage
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Potential Bug
- Dominant language
- Python
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Description
### Expected Behavior
Use all cores of cpu for text encode
### Actual Behavior

It only use 1 of cpu core for text encode.
### Steps to Reproduce
System: Ubuntu Server 24.04.1 LTS
Linux Kernel: 6.8.0-49-generic

run in common t2i workflow with flux dev fp8 model, could reproduce the problem
### Debug Logs
```powershell
no error and warn in log
```
### Other
_No response_
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