TPS reported about 24% of total TPS was around a chunk that had a handful of moved chaos nodes. Upon TPing over to investigate client and server locked up pretty hard, see TPS reported below. Area had ~6 chaos nodes and a dozen passive nodes.

[20:08:48] [TickProfiler/INFO] [TickProfiler/]:
TPS: 0.03333222
Single Entity | Time/Tick | %
EntityPacketChaos -5189,69,-2969:0 | 43.439 | 0.146
EntityPacketChaos -5188,70,-2970:0 | 28.710 | 0.096
EntityPacketChaos -5188,70,-2969:0 | 3.861 | 0.013
EntityPacketChaos -5188,69,-2969:0 | 3.817 | 0.013
EntityPacketChaos -5187,69,-2970:0 | 3.675 | 0.012
Chunk | Time/Tick | %
0: -325, -186 | 29780.418 | 99.953
0: -324, -186 | 3.100 | 0.010
0: -312, -1003 | 1.975 | 0.007
0: -118, 148 | 1.419 | 0.005
0: -117, 148 | 1.262 | 0.004
All Entities of Type | Time/Tick | %
EntityPacketChaos | 29785.492 | 99.970
passive.EntitySheep | 2.211 | 0.007
entity.EntityCitizen | 1.245 | 0.004
EntityAntiPlayer | 1.025 | 0.003
EntityAbyssalZombie | 0.847 | 0.003
Average Entity of Type | Time/tick | Calls
EntityPacketChaos | 1.012 | 29440
TileEntityHopper | 0.192 | 1
passive.EntitySheep | 0.054 | 41
entity.EntityDweller | 0.049 | 2
passive.EntityVillager | 0.045 | 7

I'll see if I can find anything. I've had reports like this in the past, but never had any luck figuring out the problem. Try enabling the "Direct Transfer" option under the "chaos" category. You may have to wait for existing problem packets to despawn, or find a way to kill them (I'm not an expert on server commands here).

Any news on this one?

No issues to report since toggling that option in configs