Why is LINQ not suitable for ultra-low latency systems?

LINQ introduces abstraction, allocations, and deferred execution overhead unsuitable for microsecond-level systems.

Ultra-low latency systems require predictable execution paths, minimal allocations, and no abstraction overhead. LINQ introduces iterator chains, delegates, and potential heap allocations, all of which increase jitter and GC pauses. In such systems, developers prefer manual loops, stack allocation, or SIMD-based processing instead of LINQ pipelines.