Ever since 1.18 has released, the performance on my fairly new Kindle tablet (Fire HD 8 10th generation from 2020) has been unacceptable for a device so new. There is plenty of storage left on my device and I have not installed any mods, shaders or texture packs.
This is absolutely unacceptable performance, this is almost a brand new device!

To give an idea, I used to get 30 to 50 fps on that device with HIGH SETTINGS on 1.17 and below. 
Now, I get 5 to 10fps with settings turned down to the absolute minimum! 

This is absolutely unacceptable performance, this is almost a brand new device!

I would also like to note that many graphical glitches and even more lag came after the addition of the Renderdragon rendering system