When blocks are placed and destroyed, the sound is very delayed, and when placing many blocks in a row, the sound isn't in the same time as the blocks are placed, but rather half-second intervals. Partical effects are also delayed, and when destroying blocks in a row, the effect will occur for every block at once causing lag.
Thank you for your report!
However, this issue is Incomplete.
Your report does not contain enough information. As such, we're unable to understand or reproduce the problem.
You are welcome to create a new ticket about your issue with more detailed information.
However, please review the Bug Tracker Guidelines and be sure to search for existing issues before writing a new bug report.
Quick Links:
📓 Bug Tracker Guidelines – 📧 Mojang Support
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki