For all having issues with rejects -
-- Keep intensity below 19, try 18 (on -g 1 configs).
-- Insert -E 10 -s 5 -Q 0 settings into your config(s).
I have always ran my r9 290 miners at -I 20 and seen little issues on other profit switching pools. However I'm getting >10% rejects on clevermining.
Can you explain why -I 18 is supposedly better in this case even though it appears to result in less WU and hashrate?
I have a R9 290X I did an experiment with many levels of intensity. Have a look here: