Boss check the follwoing:
Goto suzuki dealership and ask to test battery meter.
they have digital scanner which tells the load on battery terminal. it also tells the life of battery and it also tells how much time taken by the car self in seconds.
Normally n full load it should stay btw 13 - 14 volts but suzuki pathetic battery and weak generator does manages to stay near 12 without load and goes to 10.30 on full load which makes ur car heavy when ac takes load.
Ask them to check ur car battery without laod and with full load (lights , radio, ac on). if it goes below 13 ask them to check the alternator or the battery.
I was having problem with my 2016 model car, my electrician ask me to change the alternator. i changed the battery which didint help, but then i replaced the alternator....the problem gone.