I've got the same issue as well. Intel Core i7 with Intel 4000. 1.5.2 works great unless I use the new launcher. Start it up with the new one and it lags horribly after a couple minutes. You might be able to find the old launcher using the new one's URL and changing it for 1.5.2. I will give it a try later on and see.
I've got the same issue as well. Intel Core i7 with Intel 4000. 1.5.2 works great unless I use the new launcher. Start it up with the new one and it lags horribly after a couple minutes. You might be able to find the old launcher using the new one's URL and changing it for 1.5.2. I will give it a try later on and see.