Always same val_acc for LSTM

[iEddy19]

Hi,
I am training a Model for Timeseries Classification with 3 Labels.
But when a LSTM model is trained, the val_acc after each epoch is always 66,14% in my case. And it wont change with different Data or batchsize/epochs.

I Train on 1000 samples, validate on 7442 samples.

What could be the problem? Thank you