Massive framedrops and input lag on weaker devices

This has been a bug I've attempted to report but it always seems to either be ignored or unconfirmed.. so IllI try to go into as much detail as I possibly can so this can be replicated elsewhere.

This has occured between two different devices, and two different cotrollers.

Samsung Galaxy J3 Prime

And Samsung Galaxy J7 Sky Pro

As for the controllers

IPEGA 9021

And IPEGA 9028

What happens, exactly?

Well, as you may expect, ththe devices are relatively low end in comparison to, say, a S7. However, framerate is only related to the issue. The real issue is the game drops inputs at random times while the framerate is low, both in singleplayer and multiplayer. I've confirmed on numerous occasions across numerous games (Asphalt 8 is an amazing example here) that the issue is isolated ONLY in Minecraft.

To better explain what's happening, I'll play out a two scenarios here

Let's say I'm in a cave system, mining for redstone and diamonds. I come across a lava tunnel, and intend to stop at the edge of the lava, and begin building a bridge across it. However, despite clearly letting go of the analog stick to stop moving, I continue walking forward at full speed, and the game ignores my sneak input. Suddenly, I find myself under the lava, still moving forward for a solid 5 seconds before I can turn around and move towards solid ground again, only to die and lose all of my gear.

For scenario two, let's put me in multiplayer, specifically Lifeboat Survival Games (or any server with a minigame where you're moving in a full world and fps drops). Let's say I'm struggling through the movement issues and surviving, but someone begins attacking me from behind. Now, of course I'll turn around as quickly as I can, but rather than stop with my crosshair on my enemy, I essentially spin a complete 360, and have to try again, losing more health in the process, only for it to happen yet again, and I die.

The only minigame I can play without this issue affecting me as severely is Skywars, as my fps is usually high in that minigame, and I don't suffer input lag nearly as often.

It should also be noted that input lag happens at it's worst when chunks are loading and unloading, as even at relatively high fps (like 30 or 45) when chunks load in I drop inputs like crazy.

As you may imagine, these issues make the game entirely unplayable on my device, and I've genuinely considered permanently uninstalling the game and outright quitting until I save the money for a pc so I can play win10 instead, which could be months or even years down the line.

Please, don't ignore this issue and do some testing with weaker devices with gamepad input on Android phones. Weed out this input issue so the game is playable again. I don't care if the framerate is low, just let me control my character again.