I use NaughtyAttributes for Small Repos and for Complex projects, I use Odin. I avoid Odin since it is too much for small projects.

Now I am using NaughtyAttributes for a class with around 25-30 variables serialized in Inspector. There are few sliders and few headers. I am using 2019.3.3. Now since I upgraded from 2019.2 to 2019.3 the editor lags severally if I select this object in scene which has this class with many exposed variables. To confirm the issue I removed NaughtyAttributes using in the class and commented the Attributes and speed is increased. I switched to Odin to avoid this lag and in Odin there is no lag and has natural speed.

I checked profiler when using NaughtyAttributes and is shows EditorLoop as 80% which is huge. To playtest I have to use Maximize On Play to avoid editor lag.

I am pretty sure that NaughtyAttributes is doing some stuff which is making Unity editor so laggy. I think I have never encountered such issues when using NA earlier and I think it has something to do with newer NA v.2.0+ paired with 2019.3 and a variable heavy class.

I hope you fix it soon.
Thank you