An electronic device for handling a performance bottleneck of a system and an operating method thereof are provided. The electronic device includes a processor and a memory configured to store at least one instruction executable by the processor, wherein the processor, as a response to executing the at least one instruction, may determine, from a point in time corresponding to a start of a predetermined task, whether a threshold time preset for the task arrives, stop determining whether the threshold time has arrived in response to the task terminating prior to the threshold time arriving, and control one or more of resources for performing a task in response to the threshold time arriving prior to the task terminating.