Ok I'm ready to burn my computer.  Someone please help me.  I have a R280X that runs Cryptonite at 485h/s and according to the charts should run Equihash around 290 h/s.  I'm running claymore 12.6 on Slushpool and when the miner starts it does 275h/s.  It then begins to throttle down in steps down to 145 h/s and sometimes lower.  I recently watch it go as low as 40 h/s before climbing back up to 145 h/s.
Does anybody know why the rates are so low, and also the -i and -il commands do nothing to the hashrate.
I'm running the "blockchain" drivers but had the same problem when running AMD 15.2.
Any ideas?
Bob