iTerm2 very slow on startup since updating macOS to Mojave

Thanks for filing an issue! Please answer the questions below so I can help you.

• iTerm2 version:
• OS version:
• Attach ~/Library/Preferences/com.googlecode.iterm2.plist here (drag-drop from finder into this window)
• Attach a debug log, if possible. Instructions at https://iterm2.com/debuglog
• Are you reporting a performance issue or a hang? Please attach a sample. Instructions at https://gitlab.com/gnachman/iterm2/wikis/HowToSample
• Are you reporting a crash? Please attach the crash log. Instructions at https://gitlab.com/gnachman/iterm2/wikis/crash-logs
• Are you reporting excessive memory usage? Please attach a heap analysis: https://gitlab.com/gnachman/iterm2/wikis/heapshot

Detailed steps to reproduce the problem:

1. Download and install macOS Mojave
2. Start iterm

What happened: Very slow on start up

What should have happened: Fast start up