My game keeps dropping FPS

I am on Minecraft Bedrock Edition and whenever I play my Frames just start dropping overtime. I’ve tried doing many things to fix it such as deleting and reinstalling, checking my drivers, restarting my PC, reducing my graphic settings, Etc. The reason that it is a bug on bedrock for me at least is because I can also run java edition with shaders, and 20 chunk render distance at 100 FPS clean, and same with other games. Whenever I play Minecraft bedrock it starts by dropping it in small amounts, then it starts going up and down to the point where it is unplayable.