Inconsistent .pcap saves.

[CaesarAtmos]

Hi, I'm currently troubleshooting an issue with my M5Stack Core2 running WiFi-Hash-Monster:

As you can see in this image when the buffer size is larger than about 1000 bytes, after saving, the file is empty on the SD card.

But when the buffer size is smaller around 700 bytes, it fully saves the file and can be read just fine.

I believe this must be some issue within the sketch however I haven't had the time to dig into it and start debugging but if anyone else has an idea of what might be causing this, please let me know.