Im looking for a better spawn plugin as my server is pretty crowded and people spawning at beaches could result in alot of spawnkilling. I think I used powerspawn in the past but it was very laggy so can anyone confirm if this plugin works well or is there a better plugin available somewhere?

Also how about spawning inside building blocked or from buildings?

The reason I am looking for a custom spawn plugin is to prevent people from spawning near turrets or other peoples bases in general. No matter if they currently have building blocked or without TC and are thus decaying.

Not sure if the plugin will cause server lag. You can try to install it
Players will not respawn inside the building

If there is a building within a radius of 20 meters, the respawn point is invalid
So, players will not respawn within the turret attack radius.