What is the current situation for yearly extensions at Chiang Mai immigration in terms of queuing times?

Here's my report. I am a professor so my visa is attached to work. I have two dependents on my visa (1 spouse, 1 child). We arrived at 4am and the entrances to the mall were closed. We saw other cars inside so we moved the barrier, drove through, and replaced it. The parking lots were completely dark and had barriers, unlike the last time I was here super early in March to have my visa updated in a new passport. My husband queued up so I could keep our son asleep in the car. He was the 7th person in line. A few people (paid stand ins) had camped out the night before. We will likely be here many hours. Not sure if it will extend into the afternoon. Also, the mall itself (inside) has more barriers around. Bathrooms locked. The last time I was here the bathroom was not locked. It's not as busy today as I often see it for things like 90 days but the extension line was really long after my husband. I think at some point they put almost all extensions in the same queue whereas in the past there were more separate categories.