Windows 10 (64-bit)
Java 1.8.0 Update 51
CPU: 4x Intel Core-i5-7500 (3.4 GHz)
GPU: Intel HD Graphics 630
RAM: 8GB (where 2GB is allocated for game)
Window Resolution: 1144 x 652 pixels
Tested on Minecraft 1.15.2 (Vanilla, single-player)
- Prepare a superflat world with a surface of blue ice.
- Preset code: minecraft:bedrock,5*minecraft:stone,5*minecraft:dirt,5*minecraft:sand,87*minecraft:water,3*minecraft:blue_ice;minecraft:frozen_ocean;oceanmonument,biome_1
- Place a boat on the ground in an arbitrary direction.
- Get on the boat and hold the W key to accelerate it.
Then, as expected, the boat is running at a very high speed. According to Minecraft Wiki, its maximum speed can reach approximately 60.6 m/s (≈ 218.2 km/h.)
For some low-end computers, such a high speed may cause game to freeze due to chunk loader failures, and the F3 debug screen will show a message "Waiting for chunks..." forever.
We found this issue on Minecraft versions 1.14.x and 1.15.x, while it was not present in 1.13.x versions.
Note: I have attached a demonstration video and a debug report for this bug.