Whenever I play Minecraft Bedrock I get the error of not being able to move quickly with the keyboard (that is, I have delays when running or doing other actions)

Whenever I play Minecraft Bedrock I get the error of not being able to move quickly with the keyboard (that is, I have delays when running or doing other actions) I need help with this problem because I've been trying to solve it for days and it hasn't worked for me so far (that's why I want to contact support, please).