Before 1.20, I was able to play any world with minimal issues and it would only use up 2GB of RAM at most at any given time. After updating my game, any world I go into causes my Minecraft to use up 7GB to 8GB of RAM at once which lags my whole PC. After a few seconds the game drops to 10MB of RAM before crashing.

Below I attached my task manager readings.

Edit: I took some time to record the issue using a second computer. The game didn't crash but it did use 10GB to 12GB of RAM. The file is too large to send directly but here is a YouTube link: https://youtu.be/Kdo4HRYtgcE

First PC Specs:

• Windows 11
• Intel i5-9300HF @ 2.40Ghz
• 16GB DDR4 2667Mhz
• GeForce GTX 1650 

Second PC Specs:

• Windows 11
• Intel i5-12400F @ 3.20Ghz
• 16GB DDR4 3200Mhz
• GeForce RTX 3050