minecraft bedrock fps drops sharply

Hello Crisp_123, this is Manuela!. I'm an Independent Advisor and community user like you ready to assist with this.
Not a Microsoft employee.

I'm sorry to hear you're experiencing this inconvenience while you try to play Minecraft, let's try to sort this out.
But before that please answer the following questions:

Is this occurring with more games?
What are your computer specifications?
What procedures you tried to fix this excluding lowering the settings and vsync?

It didn't come with a code?. Not good.

The game dropped off sharply when BF3 came out but it is picking back up now since people are realizing the disappointment that is BF3.

I think it's worth it. You will get many more options with it.

My problem is with Minecraft. In windowed mode, my FPS is crazy, above 200.

But while in fullscreen (Even windowed full screen), my FPS caps at 60, even with Optifine.

I had to ask here, because this is a problem with Windows 10. I'm running 10 Home 1909, the latest release. That doesn't happen with Minecraft Windows 10. Is Microsoft trying to find a way to pull users to Bedrock?

I would appreciate your help

these are online games that are dependent on other people's connections for performance, in addition things like explosions will definitely affect your overall frame rate. You'll find most FPS using an adaptive frame rate to keep the action consistent

Like you, I've also been playing D3 a lot lately. I've only had MP lag problems once so far. My MP experience has been pretty smooth when the stuff hit the fan with 4 players going full throttle(Knock on wood).

I back out and search for another lobby. If it keeps putting into the same bad lobby, I find something else to do, like build another character then search again a little later to see if it gives me a better host or sets me as the host.