When I have only this mod + Planet Rubia installed, when the menu simulations that Rubia adds to the game starts loading, the load time lags my machine so badly that I cannot interact with the main menu for 30+ seconds, and my OS throws a popup asking me to kill Factorio because it appears to be unresponsive. More details here: https://mods.factorio.com/mod/rubia/discussion/68a37d0aa86e2ca3d73388d7

When I disable this mod, the Rubia menu simulations load perfectly fine. No idea what might be causing this, and I'm not sure which mod to "blame", however considering that no other mod makes these menu simulations load improperly makes me think that it might be something specific what this mod is doing.

Thank you for the report. I just released an update that fixes this issue :) (it was a huge migration script being run over and over for each blueprint in the library that was saved as part of the Rubia main menu simulation. The migration was for an early version of this mod, so I removed it.)

Oh wonderful, thank you!