So the nether on bedrock version on the switch has been super buggy/laggy when it comes to breaking blocks. It's been like this for a few updates now and was hoping this issue could be fixed soon. So when u are breaking blocks with an efficiency pickaxe it makes the block breaking be laggy and or buggy.
Related issues
Comments

Thank you for your report!
We're tracking this issue in MCPE-74696, so this ticket is being resolved and linked as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.
Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki
-- I am a bot. This action was performed automatically! If you think it was incorrect, please notify us on Discord or Reddit