"Blinking" when changing pattern on sprite

Hello everyone~~
I'm new in RPG Maker so maybe this question sounds a little dumb~~
I want to use a sprite that works with two patterns. Like a door: it rotates down, then left, right and up. And then it should change to the second pattern, do the same, and come back to the first pattern. The problem is that it "blinks" a frame before changing the pattern. How can I avoid that?

I've used both self switches and Yanfly's Move Route Core. Any advice?

Perhaps the blink results from the small amount of time that it takes for the game to load the image for the second set of patterns you are using. You could try setting up an event that uses the same image patterns regularly (not by changing to them after an action) on the same map, forcing the game to preload the images you are going to change to in your door-like event, and see whether the blink still occurs. If that solves your problem, you could make that extra event automatically turn its own opacity to 0 (with an autorun movement route) and switch off its autorun page after becoming invisible.

Events turn to face you by default when you interact with them. A blinking is usually an indication that the direction it is facing when it turns towards you doesn't have a sprite on that row.

Check the Direction Fix box on the event page, then in the move route, add a Direction Fix OFF command at the top, and a Direction Fix ON command at the bottom.