i've noticed recently that when just started and cold, shifting into reverse or drive i have to wait a second or two for the idle to come down, like the transmission is taking its sweet time figuring out that its in gear, and when it does there is a 'clunk' of sorts once the idle kicks down. will try to catch a video of it tomorrow.

 

My very first thought is low fluid level. How does it look?

 

After a 2 mile drive to warm up (the area i can drive it in is very small due to the DMV being closed in my state, cant get a tag, so thats as good as it gets) its reading right in the spec for hot ECT was around 180-190. only put 15 miles on it since it sat for 3 years and it seems to be getting quieter/quicker now, may just be sticky after sitting for so long.