TTT causing all players to lose connection at round start

I am trying to host a TTT server, but when a round starts, all players lose connection to the server and the server CPU reaches 100%, and the SRCDS command line doesn’t accept any input. If I delete Gmod, it works for the first time, but when the server is restarted it breaks again. The only addon I have installed is ULX/Ulib.

This is on Windows Server 2008 R1 32-bit.

Can confirm that this also applies to Debian Testing 32 bit

Console?

Doesn’t output anything past the usual SRCDS output, but I’ll add it in a bit anyway