With this mod enabled my ups /fps goes from 60 to 30 -ish. After didabling the mod everything was fine again.

With this mod enabled my ups /fps goes from 60 to 30 -ish. After didabling the mod everything was fine again.

I just did a quick test and with the mod activated, I get 60 fps, only with the mod and no other mods.

And I've tried it on a server with more than 40 active mods, including ETT, and it still runs at 60 fps, sometimes dropping to 55 fps.

Would you be so kind as to reproduce the bug with a video, so we can see how it appears for you? Thank you.

Also, if I see that more people are experiencing this, we will consider it a priority.

I do raise defines.events.script_raised_built when teleporting trains. So, the new train is automatically added to your storage.LocList via your OnBuiltEntity event handler.
The expensive ScanForTrains (running every 60 ticks) acts as a good fallback/safety net

I was aware of ScanForTrains but from update 1.0.2 to 1.0.4 this issue was fixed by increasing tick rate to 5 by default and it can be changed ingame up to a max of 10 if needed so now the game runs better, also the code was optimized.

I will no longer trigger raise_built, meaning I will no longer use create_entity to create trains. I've been using clone_entities to create trains for a long time. I don't know if this will affect your compatibility.