Performance issues

Okay, Minecraft Bedrock edition used to have nearly perfect performance in older versions! Yes! I did just test out older versions like 0.16.0, 1.0.0, 1.1.0, and 1.2.0! Those versions had perfect performance! The newer versions however, they have abysmal performance! Heck! I'd even say Bedrock now runs worse than Java edition! On my device, no matter how much I lower my settings, I can NOT reach 60 fps. Not to mention all the lag that occurs when loading in new chunks and flying! It was also on a flat world! This performance made Bedrock edition unplayable for me! Here's how you can fix it, just rewrite the entire engine or get that hummingbird engine in! Its time this abysmal performance gets dealt with once and for all! Its been here ever since 1.8, and has occurred for 3 updates! it needs to stop here!