I solved the issue. It was a memory issue not a decoding issue. Because the dynamic memory was mostly used up, it affected the encoding of the data. Reducing the amount of memory my code was using resolved the issue.

I also discovered, that Serial.println("some text") uses a lot of dynamic memory. So by reducing the amount of text I was encoding helped, but also by wrapping the the text in F(), so :

Serial.println(F("some text"))

Which stores the string in flash memory not sram. Heres a helpful link on the F function:

https://arduinogetstarted.com/faq/what-is-serial.println-f

I solved the issue. It was a memory issue not a decoding issue. Because the dynamic memory was mostly used up, it affected the encoding of the data. Reducing the amount of memory my code was using resolved the issue.

I also discovered, that Serial.println("some text") uses a lot of dynamic memory. So by reducing the amount of text I was encoding helped, but also by wrapping the the text in F(), like this:

Serial.println(F("some text"))

Which stores the string in flash memory not sram. Heres a helpful link on the F function:

https://arduinogetstarted.com/faq/what-is-serial.println-f