What I'd suggest, is that you re-install the stock air filter. Once you have it running right, then proceed by changing one thing at a time.
2-cycles are very sensitive to the flow characteristics of the intake / air filter. If it seems a bit restrictive, it's not because the engineers were stupid, but rather because this is what it took to make the engine run right.
I've never seen a 'performance' air filter do anything other than make a 2-cycle bike run badly, unless it also had a performance pipe, and correct re-jetting.