Party time!
Congrats on the new release! 
Auto-unsuspend is set to 100 ticks, but for the sake of FPS death I think it could easily be set to 600. Once every half in-game day should work, tho I always play with 200 dwarfs and even big construction designations (over 100 blocks used at once) makes them swarm like flies. Not sure how 600 ticks would work on a smaller number of dwarfs.
And some food for the brain. While I was trading huge quantities yesterday and was watching my dwarfs swarming the trade depot bringing goods + close too 1000 stone blocks I was thinking about how to speed up this process. What I wonder is if it is possible that wheelbarrows could be assigned to trade depot. Now lets say that you could assign 100 wheelbarrows to the trade depot (like you can to stockpile), by each adding +1% speed to the dwarfs that caries the goods to and off the depo. So the dwarfs would not be running around with wheelbarrows to bring goods to the depot but they would just be faster when doing the bring goods to trade depot job. Not sure where the wheelbarrows would be stored tho. In case of trade depot which entity creates a job - a storage where goods are stored or the trade depot? I know it's the storage that actually creates jobs for hauling but in case of trade depot it could be different. Any ideas on this one?
Easier methods exist...
1. fastdwarf 1 1 they just teleport to good to depot to meeting area repeat.
sorry I was on a phone, damn autocorrects.2. Trade stockpile, setup a stockpile by depot that auto trades it's goods to the depot. Add wheelbarrows, setup the stockpile settings to what you want traded...
But really, unless your selling boulders to the depot, wheelbarrows aren't going to help much. I prefer method 1, but method 2 is very effective if your trying to 'not cheat'. I use it for custom merchant shops in MW to sell unwanted stones and other things.
Additionally without a stockpile, dwarves will try to send wheelbarrows back to a furniture stockpile, or other stockpiles with wheelbarrows enabled.