Bug Description

Hello. Excuse me that I am writing to you in messages for the sake of living, I do not know exactly where to write. Excuse me in advance for the English I used google translate. Such a problem. I play on the SevTech: Ages of the Sky assembly via CurseForge, the assembly worked like clockwork. But somewhere in the middle of the Bronze Age, the game became very dependent for 3-4 seconds every 2-3 seconds, 5-7 minutes after the start of the world. I changed all the settings, allocated more RAM did not help.

Did this behavior use to work in the previous version?

Steps to Reproduce (for bugs)

Logs

• Client/Server Log: 2021-03-28-2.log.gz
• Crash Log:

Client Information

• Modpack Version: 3.2.1
• Java Version: 1.8.0.281 (64bit)
• Launcher Used: CurseForge
• Memory Allocated: 5024 and more
• Server/LAN/Single Player: Single Player
• Optifine Installed: No
• Shaders Enabled: No

World Information

• Modpack Version world created in: 3.2.1
• Additional Content Installed: No