When at a certain distance and angle from a Malisis door, the client frame rate drops considerably. Exiting the area brings the FPS back up again, but reentering makes it drop again. This may also affect the server side, but that is unknown.

When MalisisDoors is removed, the glitch no longer exists.

MalisisDoors 3.0.0
MalisisCore 2.0.1

This occured while on a server. Otherwise it's difficult to describe, it seemingly is in random positions near doors in the world, but is entirely consistent, i.e. reentering that spot lags everything again.

Can you reproduce it on another world ? Can you reproduce it with only MalisisDoors installed ?
Did you place thousands of doors ? etc..

I will need a bit more details if I want to be able to reproduce that.

this happens on 1.7.10 also, if you place more than 10 doors in an area it drops to around 30 fps from 250~
But not all doors cause this, the saloon doors are one that does

The more doors in an area the worse the fps drop

to reproduce, make a new world, hit F3 watch fps, place 5-10 saloon doors and fps will drop really bad.

ill upload a video.

https://youtu.be/nPXg0pZh8ZI

Fixed it for 1.7.10, but it's unrelated to 1.8.9 case.

testing now
...

is it fixed for all doors or just the saloon door?

That was an issue with 1.7.10 Saloon Doors only.

Please reopen if it's still happening for other doors, in the latest version.

This is happening for me with the large dark oak wooden doors. Frames drop to less than 1fps if a handful of them are in an area. More than likely all the large double doors cause this. I only extensively tested with the dark oak ones. (this is on 1.12 though)