Either get more miners to dbix3, and/or reduce the N to the expected pool hashrate.
It is exactly my thoughts, I set such a high number of shares thinking of receiving a lot of hash, otherwise I had already thought of reducing it.... I would wait a few days

Also, I not make 3 pools for the competition but for network security, I prefer 3 pools with 200ghs each rather than 1 with 600ghs