So i decided to replay whole trilogy i completed Witcher 1 again without problem but Witcher 2 have alot of random crashes mostly when loading save games, saving, shortly before cutscene, shortly after cutscene, when game loads next part of the location for example when you enter Flotsam forest from city or vice versa. So far i tried deleting most of older saves now i keep only 5-10 of them, i added Witcher 2 folder and Witcher 2 save folder to exclude list in antivirus, i used 4gb patch to allow Witcher 2 to use more than 2gb of RAM, i set GOG Galaxy and Witcher 2 to start as admin etc but it didnt help. Its very strange because these crashes are silent even Windows didnt detected them because there are no errors in event viewer.