Enhance the performance of quantized model in terms of accuracy

[hieuhthh]

After applying quantization with q4_0, I noticed that the performance of my generated results has declined. I appreciate the speed and reduced VRAM usage that this quantized model offers, but I am seeking ways to enhance its performance. Could you please suggest any solutions or improvements, such as calibration, LoRA, fine-tuning, or other techniques? Thank you for your assistance!