What is the cost of LINQ in high-frequency iterative loops?

LINQ adds overhead due to iterator creation, delegate invocation, and potential allocations.

In high-frequency loops, LINQ introduces performance overhead from iterator state machines and lambda invocations. Each operator adds abstraction layers that increase CPU cycles per iteration. In scenarios like real-time processing or gaming loops, this overhead becomes significant compared to raw for-loops, which operate with predictable memory access and minimal allocations.