Same for me, just updated to 6.4.31 today and it's impossible to work. It hangs at almost every time i try to draw a trace or when in move a component. Tried on macOS Desktop App, Windows Desktop App, Firefox and Edge, it's the same behavior for all of them.

6.4.31 is totally useless!!!!!!!!!!!!!!!!!!!!!!!!!!!!!  I no longer and do any work for all the above reasons!!!!!

Any fix??? I have work to do.

Looks like @deskpro256 has the same problem ([https://easyeda.com/forum/topic/4-layer-PCB-editor-lag-69999ef9802940cb816e469086516447](https://easyeda.com/forum/topic/4-layer-PCB-editor-lag-69999ef9802940cb816e469086516447)). And ihe is right about the plane layer, I have one in my project. I tried to switch it from plane to signal layer and it's back to normal. [https://www.icloud.com/iclouddrive/02bHxcWQgvDslKFJ9JHsuL19g](https://www.icloud.com/iclouddrive/02bHxcWQgvDslKFJ9JHsuL19g)


This is no fix when is this going to be fixed?

Any reaction from the designers?! fixing this bug would be welcomed! Aren't there any pre release tests? A 4 layer board is anything but fancy these days