I recently launched a modded server and I have given my users all the exact same config and mod files, yet 1 specific individual is unable to join for more than 15 seconds or so, and in that time the world is in a stasis. His lastest logs (here with JEI:https://mclo.gs/z0nQidk and here without: https://mclo.gs/Xy4FPIM) always seem to hint at JEI causing the issue but he's convinced his ISP is the problem. I even copied my entire .minecraft directory for him to try, and he still can't join while I can. It appears as a generic timeout on the server's console. Any help is appreciated, we're at our wits end