Network Sharing Issue

Hi, wondering if anyone else has run into the same issue doing network sharing from PC to OLED Deck.

When transferring a file via SFTP using both WinSCP and Filezilla from PC to mounted SD card, I can successfully send one file but can't do so twice. For example, a single 1.2gb video file can transfer with no issue but if trying to send two, the second fails.

When trying to replicate via SMB shared folder, the same issue arose and I got to see the speeds drop from 40ish MB/s to like 20 KB/s. Wondering if anyone else has experienced this or if this is a weird FIOS issue or something.