Severe FPS Drop & Graphics Card Scheduling Bug at Specific Structures

Steps to reproduce the issue：
1.Launch Minecraft 1.21.11 via the official launcher, with no mods installed (vanilla version).
2.Create a world, and build a relatively complex structure in it that consists of a large number of blocks such as glass, trapdoors and fences—for example, a ferris wheel or a carousel.
3.Use MSI Afterburner and NVIDIA GeForce Experience In-Game Overlay (activated by pressing the hotkey Alt + R) to start real-time monitoring of the following metrics: FPS, CPU utilization, CPU power consumption, CPU clock speed, GPU utilization, GPU power consumption, and GPU clock speed.
4.Test different distance and viewing angle scenarios:
5.Stay at a considerable distance from the Ferris wheel and carousel, observing metrics while both facing and not facing the structures.
6.Move close to the structures but keep looking away from them, continuing to monitor the metrics.
7.Stay close to the structures and face them directly; additionally, test the scenario where the structures are obscured by opaque solid blocks while still facing their direction.

Expected result：
1.FPS remains stable at around 100 FPS in all test scenarios, consistent with normal gameplay performance.
2.GPU operates normally across all scenarios: utilization stays around 10%-30%, clock speed maintains approximately 1000 MHz, and power consumption fluctuates moderately in line with actual load changes.
3.CPU maintains normal operating parameters in all scenarios, with utilization, power consumption, and clock speed within typical ranges.

Actual result：
1.Severe FPS drop: When staying close to the Ferris wheel and carousel and facing them directly, the frame rate plummets sharply from approximately 100 FPS to 30-50 FPS. Notably, this drop still occurs even if the structures are obscured by opaque solid blocks.
2.Abnormal GPU performance (only in the specific triggering scenario):
3.GPU utilization surges from the normal 10%-30% to nearly 100%.
4.GPU clock speed jumps from around 1000 MHz to over 2700 MHz.
5.GPU power consumption remains nearly unchanged, even when the GPU is under 100% load for 15 consecutive minutes. This indicates that the GPU is not actually running at full load despite the displayed 100% utilization, confirming a GPU scheduling bug.
6.Normal GPU performance in non-triggering scenarios:
7.When staying at a considerable distance from the structures (regardless of whether facing them), GPU utilization remains low at 10%-30%.
8.When staying close to the structures but looking away from them, GPU utilization also stays at the normal low level (10%-30%).
9.Normal CPU performance (no anomalies observed in all scenarios):
CPU utilization remains at around 10%.
CPU power consumption fluctuates between 20-30W.
CPU clock speed stays around 4900 MHz, all within normal operating ranges.