Latency on VICE and PUAE

hello i noticed that in VICE (c64) and PUAE (Amiga) cores it is not possible to activate the Preemptive Frames and Run-Ahead options. is there any other way to improve the latency? i tried to modify “Frame Delay” option but i don’t see any differences (to test it I pause with the P key, hold the key to jump and then press the K key to advance one frame at a time)