I gain weight like no one I know at 3,000 Kcals per day. My coach, who works out a lot more than I do and is 20 years younger, has to eat 6,000 to 7,000 kcals per day just to keep his bodyweight where it is (about 210 lbs). So everyone is different.
I would increase your macros until you are gaining steadily. If you are gaining more than 1 lb per week, you are going to get too fat. Even 1 lb per week is a lot and will get you fat over a long period of time. My coach has convinced me to diet down to sub 10% and to gain no more than 1 lb per month going forward. He says at my age it is so hard for me to lose fat, I should take it off and keep it off, and do very slow bulking. After struggling for over a year to take off the last 20 lbs to get a 6 pack, I have come to see the wisdom of his advice.