Minecraft Bedrock Edition 1.14.0.52 Beta Crashing Because Of Memory Drop

When I Play Lbsg Server On Capture the wool aka CTF

"I get from 33 to 6 when i joined lbsg server", when im off the server i get 222 to 150 total memory once it reaches from 6 and lower memory on the server it goes to -1 and lower and crashes at -6 memory. this happens to me on a low end device but never has it happen to me on official version of minecraft "1.12.1".