just tested the latest 11.5 version and I got a nice surprise.
as a refresh, I was  still using the 10.6 version, because it gave me the best stable hash rate: 196mhs. from version 11, the hashrate dropped big time (0.800 per card - and I have 13 cards). hashrate for 11.4 was the best for the 11.x series - 194mhs.  and now, testing the 11.5 version i got 197mhs!!! wow... this is better than the 10.6 version. I do not know about stability, as it is only running for 30 minutes.

my rig: 13 rx560 cards, linux (hiveos), every card is bios modded (memstrap+ram overclock) with no hwd mem errors and no bad shares. solo mining, asm -2. did not tested with old kernel as the default settings are giving already the performance above my expectations.

good job!

edit:
does dcri matters when solo mining?
when I tested the 11.4 version, the autodetect function had given me values from 12 to 7 for all my cards. now, with the 11.5 version I got:
Current -dcri values: -dcri 54,48,46,54,50,46,52,52,46,52,44,52,52

So, seems a big change in dcri values between the 2 versions.

Thanks.