Steps to reproduce
I don't have time to refine these at the moment.

1. Load attached save
2. Drive the car to get lots of biters to follow
3. Drive the car into a slight opening in the forest
4. Switch hold manual shooting (C) and auto shooting (Space) randomly, also switching targets randomly
5 ...

I don't think what me and Mango are experiencing is the same as OP because it happens on a newly created map:
It also hapens in newly created map with no factory

when I was driving a tank or a car

faded, do you experience more frame rate drops when steam engines and furnaces enter your view ...

This seems like a regression, performance was better in 0.15.9 and the only HD texture added was the burner inserter. Here's my log .

Edit:
Just noticed this change in the changelog:

Terrain, shadow and smoke sprites are sorted into separate sprite atlases in attempt to optimize GPU memory access ...

Can confirm. This post on reddit mentions the issue and has ~8 upvotes. @Mango, press F4 and select `show-time-usage` and take a screenshot when the lag spikes are occurring and when they are not occuring so the developers know where to look for the issue. It would most likely also help with ...

Currently technology pages contain very little useful information. Technologies do not deserve their own articles as there isn't anything to explain other than what is in the infobox. I suggest we merge them all into the technologies article which is just a bunch of links to the different technology ...

Are the forums where all wiki discussion happens? Should I use discussion pages? I would prefer to use the wiki for discussion because discussions form trees so you don't get a mess of growing quote blocks. The forum usernames may also be different from wiki usernames.