I have had at least 5 CTD in this playthrough and i still have the nodes and level4 to go, can not remeber having any in the last couple of versions, does anybody else experience this or is it just a bad install from my part ?
I'm on my second run through 8.1.0NC and have not crashed and only very very minor lag in the fire temple. Win7 64bit. Have you tried re-activating? It'll keep your saves for you.