I'm not recommending nothing on that . gigabyte has a lot of H-61 boards listed good for win-10 so you should be good ?
http://www.gigabyte.com/microsite/381/w10.html
your specs look ok and should be a nice balance , for me that 450w psu would never be in there for anything over light office or house hold use .butt ????
NVidia has struggled with win-10 that why I said may need to try out some older / other drivers and see if one does a better job .
'' i was facing lags and stutters in some games '' thing is theres so many things that could cause this it can take a lot of trial and error and process of elimination to weed it out to something
like I got a game that has a slight issue with intel rigs but never see it with a AMD rig and games that kinda sucked on AMD platforms that now rock on this intel ????? so it can be just one of them things with the games optimizations ?? if there online games maybe the internet service or a high ping ??
what games are you having a issue with ?
also what brand is that PSU you got ?
may try a smart test of your harddrive to se if its having any spin up issues or something when the program call on it for something ?
run memtest and see if it passes a 8 / 12 hr pass run ?