Freeze on player connect

[BOJEKAKAYAPOPKA]

Server freezing on every player connection, but if Discord/Core is disabled server works fine without any freezes.

Metamod:Source version 1.11.0-dev+1148
SourceMod Version: 1.10.0.6545
Rest in Pawn: 1.3.1 (1.3.0 was also tested)
Discord Core: 1.3.0 (1.2.0 was also tested)

[CrazyHackGUT]

This may be caused by any Discord module, because Core does nothing when any player connects.