Thank you for that information. Everything seems up to the task and I agree that you likely shouldn’t be having such long load times. Unfortunately, we do not provide direct support for these modding tools. To get support with the Squad development kit, it would be best to either refer to their wiki or speak to them through their official Discord channel.
If this does end up being related to the engine as a whole rather than just their development kit, please let me know and I’ll continue to assist.