That said, The PCG author does not recommend to use it for cryptography.
"Although it is less trivial to predict than many mainstream generators, that does not mean it should be considered crypographically secure. Exactly how hard it is to break different members of the PCG family is unknown at this time."
"pcg32, which has state-space size of 2^127 (2^64 period × 2^63 streams) and produces 32-bit outputs."
https://www.pcg-random.org/predictability.html
That said, The PCG author does not recommend to use it for cryptography.
"Although it is less trivial to predict than many mainstream generators, that does not mean it should be considered crypographically secure. Exactly how hard it is to break different members of the PCG family is unknown at this time."
https://www.pcg-random.org/other-rngs.html