Cool I get to try the new version soon

DSTM GPU miner version 0.6 is here, thank you DSTM :-).
A lot of new features, geat.
But no improvment about he hashrate.
Are we at the maximum of the possible hashrate with the Equihash algo or is there some possible improvment in the future ?
The cards still have room for more computing power, but we are at limits of the previous model where CPU is driving the GPU hash power.
I cannot imagine a big increase without reworking the entire way we mine on GPU and the benefit would only be felt at very expensive cards that are currently bad for mining (Titan, 1080TI)