Why can an SSD fail?

Question

Iron

The essence of the problem is that when you exit sleep mode or a long idle time (for example, after a night), the write speed of the SSD drops dramatically. Up to 5 Mb/s. Reading does not suffer. The recording starts normally and after a second it falls (it seems that the cache is working properly). Saves only reboot. It is clear that most likely it is necessary to change the hardware, but what if it is treated with software? Maybe someone came across.