Classic models of covert, spatial attention, developed with simple, artificial stimuli, postulate that there is an attention modulation effect that enhances both the speed and accuracy of target detection while using visual cues. This study investigated the generalizability of this effect by exposing participants to naturalistic, not only artificial stimuli. Stimulus complexity and location predictability were manipulated to create five stimulus conditions varying in naturalness. Twenty-three participants completed a modified Posner cueing task where they identified targets within stimuli varying in naturalness presented at fixed (predictable) or varied (unpredictable) locations. Cueing effects were calculated for both reaction time (RT) and accuracy. While the results replicated the classic RT cueing effect in most conditions - participants responded faster to cued targets, the accuracy data revealed a surprising result. A significant positive accuracy cueing effect was found only for artificial stimuli in varied locations. Crucially, for all stimulus conditions using naturalistic stimuli, the accuracy cueing effect showed a consistent, non-significant negative trend. This suggests that cues may hinder rather than support performance in complex visual settings. Furthermore, the subsequent analysis failed to support hypotheses that predicted specific ordering of cueing effects derived from either the classical zoom lens model or a complexity-based model. These findings challenge the assumption that visual cueing is universally supportive. They suggest that under high perceptual load, a cue may act as a source of distraction, impairing accuracy even as it speeds the initial orienting of attention.