https://www.tensorflow.org/tutorials/load_data/text I try some tutorials of Tensorflow official site on my macbook air m1 to learn tensorflow, find RNN-like neural network does not work as expected, such as RNN, GRU, LSTM. Later I run the same code on my linux server, it works properly. I can't figure it out. It maybe a bug of tensorflow-macos or tensorflow-metal. The result of my mac: 100/100 [==============================] - 33s 273ms/step - loss: 9.6882 - accuracy: 0.2562 - val_loss: 11.9475 - val_accuracy: 0.2587 Epoch 2/10 100/100 [==============================] - 25s 250ms/step - loss: 12.1238 - accuracy: 0.2478 - val_loss: 11.9475 - val_accuracy: 0.2587 Epoch 3/10 100/100 [==============================] - 25s 252ms/step - loss: 12.1238 - accuracy: 0.2478 - val_loss: 11.9475 - val_accuracy: 0.2587 Epoch 4/10 100/100 [==============================] - 25s 254ms/step - loss: 12.1238 - accuracy: 0.2478 - val_loss: 11.9475 - val_accuracy: 0.2587 Epoch 5/10 100/100 [==============================] - 25s 255ms/step - loss: 12.1238 - accuracy: 0.2478 - val_loss: 11.9475 - val_accuracy: 0.2587 Epoch 6/10 100/100 [==============================] - 26s 256ms/step - loss: 12.1238 - accuracy: 0.2478 - val_loss: 11.9475 - val_accuracy: 0.2587 Epoch 7/10 100/100 [==============================] - 26s 257ms/step - loss: 12.1238 - accuracy: 0.2478 - val_loss: 11.9475 - val_accuracy: 0.2587 Epoch 8/10 100/100 [==============================] - 26s 258ms/step - loss: 12.1238 - accuracy: 0.2478 - val_loss: 11.9475 - val_accuracy: 0.2587 Epoch 9/10 100/100 [==============================] - 26s 258ms/step - loss: 12.1238 - accuracy: 0.2478 - val_loss: 11.9475 - val_accuracy: 0.2587 Epoch 10/10 100/100 [==============================] - 26s 256ms/step - loss: 12.1238 - accuracy: 0.2478 - val_loss: 11.9475 - val_accuracy: 0.2587 Like not train at all. If it is four classification problems, the accuracy would around 0.25, and binary classification problem 0.5. My platform: tensorflow-macos v2.10 tensorflow-metal v0.6.0 mac-os v12.6.3 mac-air m1