So far I've found plenty of new recipes that hit the 400-500xp mark per synth. Even in the 40's (GSM), I'm not having any trouble. In fact it seems easier. Electrum Ring mats are so easy to get now its like a free syth if you have miner. I could make em all day long. Then by the time you're done with that you've mined so many jewels you can just switch to jeweled rings and you're set to 47....

People are just too lazy to work with the new recipes....