Huge lag spikes with trees

When just breaking tree logs in general my fps drops to 6-10 instantly and this only happens when breaking the tree logs and not leaves.

When you set leaves on fire they also cause extreme lag spikes that make the game unplayable until all leaves have burnt up, and they also make the wool destroy sound when burning up.

Here's a video example of this:
https://www.youtube.com/watch?v=EuVTTkEKaag&feature=youtu.be