Minimizing the game for a while and reopening it increases memory a lot

Summary

After minimizing the game for a while, reopening it can increase its memory usage a lot.

Steps to Reproduce

1. Open the game.
2. Minimize the game.
3. Wait for a while (for example, 30 min).
4. Open the Task Manager.
5. Restore the game.
6. Observe the memory usage.

Observed Results

The memory usage increases a lot. (For example, for my device, the RAM is 16GB, and the game takes up about 9GB, making the memory usage more than 90%.)

Expected Results

The memory usage only increases by about 1-2GB.

Notes

You may have to try many times to reproduce the bug.