Scientists from the Arizona University analized the Dash network in order to find its scalability limits and determined the most optimal block size limit.

Researchers from the blockchain laboratory at the University of Arizona studied the problems of scaling in the Dash network, simulating the work of at least 6,000 full nodes and mining of more than 700 blocks. The results are published in the report titled "Block Propagation Applied to Nakamoto Networks".

The scientists applied three scaling solutions to the Dash network model: a) traditional block propagation where the block is broadcast in full, b) compact [Cor16] block propagation and c) Xtreme thinblocks (xthin) [Tsc16] block propagation.

According to the results of the research, scientists came to the conclusion that the Dash network allows to scale up to 10 MB of block size, in the case of xthin blocks, or up to 6-8 MB in case of implementing a solution for compact blocks.

At the same time, the researchers note that only blocks of no more than 896 Kb are economically rational in the Dash network, since only they provide profitable work of miners.

"We approximate how economic factors will also effect the capacity of the Dash network. As the network scales, the economic incentive of miners to include more transactions in a block should be considered. Assuming all transactions have a .01 DASH per MB fee density, a mining reward of 1.67 DASH and an economic orphan rate increase of 2.15% per MB. These results suggest that blocks over 896 kB would be uneconomical to mine. That is, the transaction fee does not compensate miners for the increased orphan rate."

Dash announced its sponsorship of the Blockchain Lab at the University of Arizona in the summer of 2017. The volume of investments was claimed to reach $350,000.