You should try 0.33b4, it has some heavy optimization and it's stable for me. 0.33b5 should be avoided for now. It has increased fee but has very unstable heavy hashrate (especially the effective one). I'm a big fan of this miner and been using it for several months and I'm sure the creator will fix the problems but for now I would recommend to use previous versions or other miners. As for V8, I couldn't get close to teamred results, so I don't quite understand the new fee with explanation like "I only have teamred as a competitor, thus such fee". Also it looks like it would be fair to take that fee accordingly to the algo mined. For example jce is not better then others in cn-lite,xtl... So I would mine with other miners to save extra 1.5% of hashrate but I would definitely use jce for heavy variants with it's brilliant implementation (when it's fixed for stability).