Is there a way to speed this up? It seems really slow. I have a ton of idle bots but only hear them put down a new tile every 15 - 20 secs. And only one at a time.

Give this a try: http://pastebin.com/raw/WKjTsFHq

Edit: Might lag you to hell, if it does change the tick multiplier.

Short gif that I made during testing it: http://i.imgur.com/9By5DRa.gifv

I love it. Thanks Nebelwolfi

That's a very satisfying gif, Nebelwolfi.

I was concerned that faster concreep speed would cause terrible lag and I do have one user reporting the mod slowing down his factory. Currently, the mod checks every roboport every 10 seconds. At this rate it would take 7 hours for a roboport to fill it's area, assuming no overlap. Assuming perfectly placed linked ports with no logistics overlap, it would take nearly 2 hours. I know an easy optimization I can place to make it go faster so I'll do some testing.

Give this a try: http://pastebin.com/raw/WKjTsFHq

Edit: Might lag you to hell, if it does change the tick multiplier.

Short gif that I made during testing it: http://i.imgur.com/9By5DRa.gifv

it is a bit faster but not as in your gif

i have 45k bots and only 30 are utilized, what the fuck!

i have 45k bots and only 30 are utilized, what the fuck!

Feel free to upload your save for testing purposes.

Edit: Feel free to test this one: http://pastebin.com/JxedKMy5
Edit2: Gif (not speedup): https://i.gyazo.com/23cd58e8e917bcee0d622087d680cce3.gif
Be aware that I am using Youki Industries roboters there.

the new changes are causing my game to lag pretty badly. also noticed that when it get bad the square shape goes into a stripping line pattern.

what can be changed to make it closer to what it was?

I forgot to stop looking/expanding if there was no concrete available! I fixed this and now it should run smoother, faster, and with better fill.

Note that when the mod updates, the radius gets set to 0 and it make take a minute or two before the radius expands and starts finding new tiles to place.