Alright some update here, could be a good news or just temporary I don't know. I said above that after booting and run a program the RAM keep increasing (although slowly increase) just after posting that, I tried to run Dota 2 and of course the game is unplayable, so much freeze and longer loading times than usual. So I have to reboot the system and right now (for now) the memory run like usual after I close chrome it back to 44% not staying high like I said before. But I'll do the maintance tonight and see what happen in the morning if this is just a temporary.
I think yes Kasperksy was the top 3 in Task Manager but I disabled it once when I first have this problem but nothing changed still slow, reboot fix it for a moment.