Hello,
According to specifications, all measurements output of the MPU6050 are in the form 16-bit 2’s complement value (Int16).
Int16 values range from -32768 to 32767.
The results you shown have values outside that range.
I run your codes and get the same result but I don't know C# enough to fix it.
Let me know if you find a solution.
Regards
Vinh