Hi, everyone. I'm planning to downsize from pc to a laptop. Thinking about getting HP ENVY 17.3" (i7 5500U, 1Tb, 16Gb, gtx950m 4Gb ddr3). I'm gonna use it for HP UFT and LoadRunner, also ocasional gaming (Witcher 3). Can somebody tell me which one will be better? And what is better Gtx860m 2Gb ddr5 or gtx950m 4Gb but ddr3? Thank you I appreciate you help.