Increasing speed won't help us much at all as everyone is using Claymore right now so there's not much of an advantage other than spiking difficulty faster and killing the coin price.   Higher speed comes at higher cost as I'm seeing is much higher power usage going from V1 to V6.  It's now almost comparable to Eth solo using low power ROMs.    We're not making more money with this but we're just taxing our GPU way more.  Before it was less Core and memory intensity now it's both memory and GPU intensive hence why we can't dual mine.  I hope we're able stabilization point as squeezing more out of the GPU is not making us more money really since my guess is over 90% uses claymore now as it doesn't make sense to use anything else with the higher hash rate plus manageability via other tools such as Awesome miner.  It's best we focus on how to keep the same hash at lower power usage to let our GPU last longer.