Important：Based on testing, when using the Qwen 2.1 LoRA, the CFG should not be lower than 3.0, otherwise the quality will be very poor. CFG 4.0 is recommended. Do not use acceleration LoRAs, or it will not work.
经测试CFG不能低于3.0，否则会非常劣质。推荐CFG4.0.不能用加速lora，否则会失效，
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If your lora dont work without CFG 4.0 its just means its undertrained or fails at all and all result just generated by prompt.