Significant decrease in //replace performance in build 360+, introduced somewhere after build 354.

[Combustible]

Bug report for FastAsyncWorldEdit 1.16.3 / 1.15.2 (reproducible on both)

FastAsyncWorldEdit Configuration Files: https://athion.net/ISPaster/paste/view/9f53e1f9f5c946c788a4587928f70ef9

FastAsyncWorldEdit Version Number: Very slow in version FastAsyncWorldEdit-360, 371 Works fast/correctly in FastAsyncWorldEdit-349, 350, 354

Spigot/Paper Version Number: Paper version git-Paper-"d802a50a9" (MC: 1.16.3) Paper version git-Paper-"cebec202f" (MC: 1.15.2)

Description of the problem: Doing a //replace operation over a very large area (for example 5 million blocks) is now extremely slow. In build 354 (latest one I tested which was good), this takes 1-3 seconds. In build 360 (oldest one I tested with the problem), this takes almost 3 minutes before it completes.

How to replicate: Large //replace operation (~ 5 million blocks for example). Seems to be consistent in my limited testing... Was replacing an underground area so no view of the sky - I know there are some light related changes between 354 and 360 but not sure if that is the reason.

Plugins being used on the server:

Plugins (18): Arceon, BKCommonLib, BungeeTabListPlus, CommandAPI, (WorldEdit)FastAsyncWorldEdit, goBrush, goPaint, LightCleaner, LuckPerms, MonumentaWarps, PlaceholderAPI, PrometheusExporter, ProtocolLib, ScriptedQuests, SpeedChanger*, Vault, VentureChat, VoxelSniper

Checklist:

• [X] I included all information required in the sections above
• [X] I made sure there are no duplicates of this report (Use Search)
• [X] I made sure I am using an up-to-date version of FastAsyncWorldEdit for 1.16.2
• [X] I made sure the bug/error is not caused by any other plugin

[dordsor21]

You have parallel threads set to 1 in this debugpaste. Is that intentional, and did you also have it set to 1 when in pervious versions? I cannot replicate any issues with replace.

[Combustible]

Yes, I used the same config for both tests. The only thing I changed was the FAWE plugin jar.

[dordsor21]

Is performance still poor for replace?

[dordsor21]

I assume this is no longer an issue

[Combustible]

Was fixed, thanks!