When you kill a mob with the Malum scythe, the souls that appear will cause the client to crash when they are rendered with Rubidium installed. As soon as Rubidium is removed, the souls can be rendered and collected normally without issue.
crash-2022-08-31_22.29.09-client.txt

(Playing on 1.18.2, sorry I forgot to mention that)

Same, it's any weapon because when Malum items spawn and Rubidium is present you get the crash.

@brybry251 Change buffer_particles = true to false in ortus-client.toml