The item displaying of barrels is quite laggy apparently. According to spark, it can take up to 20% of the rendering time, and FPS drops to 50 for us whenever we face to an area with a bunch of barrels.

Optional: tool to mass hide barrels

I can add such an option, but could you also provide the spark profile so I can check if the performance issue can be solved directly?

Will do.

https://spark.lucko.me/BN4jU8rJvJ

There's some stuff that are from Sodium instead. We wonder if there could be an issue there?

What happens if you remove glyphix? It seems to make text rendering very slow.

Seems to fix it a little bit, still gets frame drops somewhat, though.

Here's the new profile: https://spark.lucko.me/zuzYP1g0t7

As a workaround, make sure to surround the faces of the barrels that you don't use with solid blocks. This will cause the barrel to skip rendering for that side entirely. (E.g. if you only use the front face you should surround the 3 other faces with some opaque block).