Why are the quality indicators worse after PFO?At first, there were issues with certain parameters being missing, such as 'iter'; after fixing the parameter execution, the quality metrics (like LPIPS) worsened, and the images started to look overexposed.

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Average Metrics: BPP: 0.0325927734375 Text_BPP:0.004486083984375 Total_BPP:0.037078857421875 LPIPS: 0.28334662318229675 PSNR: 19.986619130379687 MS-SSIM: 0.6513922810554504 DISTS: 0.14735037088394165 LPIPS_2: 0.28447818756103516 PFO Metrics: LPIPS: 0.4520566761493683 DISTS: 0.2697262167930603 PSNR: 10.1664369630376 MS-SSIM: 0.5610343813896179