Hello everyone

I created a survival world 1 month ago. The gameplay was smooth and enjoyable.

Then after a couple of weeks, the game has starded to lag randomly (sometimes 10 fps)

I suppose it's because I explored the world a bit much (23.8 MB). Indeed, when I create a new world or play in a flat world, there is no problem

Here's my config (dxdiag) :

Machine name: LAPTOP-PG1C80LB
Operating System: Windows 10 Famille 64-bit (10.0, Build 18362) (18362.19h1_release.190318-1202)
System Manufacturer: HP
System Model: HP Laptop 17-ak0xx
BIOS: F.04 (type: UEFI)
Processor: AMD A6-9220 RADEON R4, 5 COMPUTE CORES 2C+3G (2 CPUs), ~2.5GHz
Memory: 12288MB RAM
Available OS Memory: 11742MB RAM
Page File: 3961MB used, 9571MB available
Windows Dir: C:\WINDOWS
DirectX Version: DirectX 12
DX Setup Parameters: Not found
User DPI Setting: 96 DPI (100 percent)
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
Miracast: Available, with HDCP
Microsoft Graphics Hybrid: Not Supported
DirectX Database Version: Unknown
DxDiag Version: 10.00.18362.0267 64bit Unicode

Please help me. I looked for solutions for a very long time. Thank you in advance