The problem is a certain chunk shown in this video:
https://www.youtube.com/watch?v=qsczEpgyyAg
Crossing the chunks borders in a positive X direction or a negative Z direction results in a short freeze, only reproducable on the server and not in the same world being played singleplayer. Only the person crossing is affected by the freeze.
And as shown in the video only this single chunk causes the problem.
Environment
– System Details –
Details:
Minecraft Version: 1.18 RC3 (edited, sinced text copy was older)
Minecraft Version ID: 1.18-pre7
Operating System: Windows 10 (amd64) version 10.0
Java Version: 17.0.1, Microsoft
Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Microsoft
Memory: 795494136 bytes (758 MiB) / 1577058304 bytes (1504 MiB) up to 2147483648 bytes (2048 MiB)
CPUs: 12
Processor Vendor: AuthenticAMD
Processor Name: AMD Ryzen 5 1600 Six-Core Processor
Identifier: AuthenticAMD Family 23 Model 1 Stepping 1
Microarchitecture: Zen
Frequency (GHz): 3,19
Number of physical packages: 1
Number of physical CPUs: 6
Number of logical CPUs: 12
Graphics card #0 name: NVIDIA GeForce GTX 970
Graphics card #0 vendor: NVIDIA (0x10de)
Graphics card #0 VRAM (MB): 4095,00
Graphics card #0 deviceId: 0x13c2
Graphics card #0 versionInfo: DriverVersion=27.21.14.6172
Memory slot #0 capacity (MB): 8192,00
Memory slot #0 clockSpeed (GHz): 2,40
Memory slot #0 type: DDR4
Memory slot #1 capacity (MB): 8192,00
Memory slot #1 clockSpeed (GHz): 2,40
Memory slot #1 type: DDR4
Virtual memory max (MB): 20928,89
Virtual memory used (MB): 11366,45
Swap memory total (MB): 4608,00
Swap memory used (MB): 38,83
JVM Flags: 9 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
Launched Version: 1.18-pre7
Backend library: LWJGL version 3.2.2 build 10
Backend API: GeForce GTX 970/PCIe/SSE2 GL version 3.2.0 NVIDIA 461.72, NVIDIA Corporation
Window size: 1920x1080
GL Caps: ERR
GL debug messages:
Using VBOs: Yes
Is Modded: Probably not. Client jar signature and brand is untouched
Type: Client (map_client.txt)
Graphics mode: fancy
Resource Packs: vanilla
Current Language: English (US)
CPU: 12x AMD Ryzen 5 1600 Six-Core Processor
(copied from and unrelated crash report)
Duplicate of MC-162253.