Baldur's Gate 2 EE lag problem on windows 7/10

Hello, I need a little help to fix this lag issue. I bought BG2EE a few months back, and when I tried playing, after 30 min I've encountered an unplayable lag. I searched on google the issue and found that it is a known bug (I had windows 7 at the time), but did not found a solution, so I gave up tring to play the game (even though I payed for it, I did not try to request my money back). Last week I've installed windows 10, thinking it would be different this time, I tried again BG2, but the same error, after only 5 min of play.
Please help, I really want to play this game...
My laptop configuration is: Aspire 7739G / i3-380M / GeForce 610M / 4Gb RAM.