For the love of god let me play!!!!!!!!!!!!!!!

[Argh]

Here is what a working connection should look like:

2019-10-17 15:10:14 Networking: using port [53099].
2019-10-17 15:10:14 Networking: Connection Established [1]
2019-10-17 15:10:14 WorldAuthenticate: Initiating Login.
2019-10-17 15:10:14 WorldAuthenticate. I got a message of type 0xfa6 (4006).
2019-10-17 15:10:14 WorldRPServer message: server name P1999Green
2019-10-17 15:10:14
2019-10-17 15:10:14 WorldAuthenticate. I got a message of type 0x4ec (1260).
2019-10-17 15:10:14 WorldAuthenticate. I got a message of type 0x3c25 (15397).
2019-10-17 15:10:17 WorldAuthenticate. I got a message of type 0x6957 (26967).
2019-10-17 15:10:17 WorldAuthenticate. I got a message of type 0x4513 (17683).
2019-10-17 15:10:17 Check 1sa. 0x3c551819
2019-10-17 15:10:17
2019-10-17 15:10:17 Check 1x. 0x9e15bc94
2019-10-17 15:10:17
2019-10-17 15:10:17 WorldAuthenticate. I got a message of type 0x7cba (31930).
2019-10-17 15:10:17 WorldAuthenticate. I got a message of type 0x52a4 (21156).
2019-10-17 15:10:17 WorldAuthenticate. Access granted.

It looks like your connection is failing at:

2019-10-17 14:45:55 Networking: using port [52727].
2019-10-17 14:45:56 Networking: Connection Established [1]
2019-10-17 14:45:56 WorldAuthenticate: Initiating Login.
2019-10-17 14:45:56 WorldAuthenticate. I got a message of type 0xfa6 (4006).
2019-10-17 14:45:56 WorldRPServer message: server name P1999Green
2019-10-17 14:45:56
2019-10-17 14:45:56 WorldAuthenticate. I got a message of type 0x4ec (1260).
2019-10-17 14:45:56 WorldAuthenticate. I got a message of type 0x3c25 (15397).
2019-10-17 14:45:56 Networking: Connection Closed [0] with 0 pending bytes.
2019-10-17 14:45:56 *** ERROR: WorldAuthenticate. My message arrival was NULL, the net has been shutdown.
2019-10-17 14:45:56 *** WorldAuthenticate. Checkpoint 3.

While I have no idea what WorldAuthenticate Checkpoint 3 is (maybe Llandris or a dev could help you on that) I've found a similar issue in some archived posts on p99 here which seem to point at it being an overclocking issue.

Are you overclocking your CPU or anything else?