I have a moderatly large train rail system with 13k rails placed.
When holding a signal I get a massive lag spike.
In Debug it says currently using 12 milliseconds. Cropped Screenshot in my next comment attached.
Unfornutatly this isnt usable for me. Even tho I liked it previously. Maybe I installed too many mods since then. I dont know how that might affect this. But 12 Milliseconds every time I try to build rails has become too much for me.