ETH difficulty too low

It would be nice to have a port with higher difficulty, let's say 4. I'm telling this because my Claimore shows a lot of found shares. The issue I can see here comes from the fact that each found share suppose a ping-pong communication between miner and the pool. Every found share has an associated spent time on communication.

Having a lot of found shares means also a lot of time is spent on communication. I would like to be available an increased difficulty port to let the miner to compute more than talk with the pool.

By the way, I'm using the 1.5 difficulty.

This issue will have a higher impact into the near future when microsoft and linux will deploy the patches for meltdown and spectr. After this the performance related to network and hdd access times will be highly affected and the found shares will decrease. 

We, the miners, and you, the pool, have to find the best way to reduce the down side effect of this patches.

Recently, the nanopool have doubled their difficulty. Maybe this is one of the reasons.