The A8-6500 is a very "outdated" CPU. I put outdated in quotes because you can't really update much and there is nothing new for the FM2 socket. The GTX 1050 Ti is a much newer card. If you can't upgrade, invest in a new CPU/MOBO/RAM combo. If you can't upgrade, try setting your graphics in your games to medium or low if u are a gamer of course
Regards