So what's up with the block times? Is it a diff algo bug or a feature?
What you are seeing is the effect of a phenomenon. Decred had approximately 3-4 TH/s on the network at peak, then lost 2-3 TH/s suddenly. During this time, the block interval was too fast. Now the network is compensating for this by having slower blocks, so that the average time is 5 minutes. At block 864 it will adjust again to a lower difficulty. The difficulty algorithm seeks to meet an average block time. This is the effect of "anti-instamine", if you will. Blocks are coming in, and the people mining get the same share of decred they would at a lower difficulty.
These are early days, people. The network has shown it can weather the storm and is now beginning to readjust again. The devs are working every day. The community is growing. There was even mainstream press today. The first request-for-proposals (RFP) are going up soon and a stake pool is being tested as I write this. This is a long-term project, so strap in.
That's the main issue. Diff retargeting is too slow.
What if tomorrow other 3-4 TH enter the game?
Everytime chain need to wait hundreds of blocks to readjust.
It's correct?
If to many mining power without a proper and quick readjustment every block, difficulty remain high for hundreds of blocks resulting in a slow chain.
