OpenMW freezes after loading files before the main menu, but runs without issues after waiting a few seconds

What is your operating system? Windows 11
What version of OpenMW are you using? OpenMW 0.49.0 RC6
What version of Morrowind are you using (i.e. retail CD or Steam)? What addons (Tribunal, Bloodmoon) do you have installed? What language is your Morrowind install? GOG, every Addon, English
Do you use any mods? If so, does the problem also occur in a clean vanilla install without any mods? I am using the Total Overhaul Mod List. It does not happen in a clean vanilla install.
What are the exact steps to reproduce the problem? Install the Total Overhaul Mod List. Start OpenMW with either the Launcher or directly.
What did you expect to happen? What happened instead? I expected the main menu to load, instead a message saying OpenMW has frozen appears after loading all files, but the main menu loads anyways if waiting a few seconds after the message appears.