I used the version 1.5 before, and the effect of updating to the latest version in the past few days is very poor

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After removing the material background and training, the previous 788 mirror image real-life materials can see obvious results in 1,500 steps, each has its own advantages and disadvantages at 10,000 steps, and the finished product can be produced in 40,000-50,000 steps. After the latest version, the same setting of 80,000 steps is very unstable, and it is not easy to see the picture. And the set learning rate function is reduced and there is no response, and the training is still set to 0.00000172 at the end.