I'd recommend downloading and running HWMonitor or similar, and checking your temps. Record your CPU and GPU temps, then get a can of compressed air and thoroughly cleaning the intake and exhaust vent, paying special attention to the copper cooling fins just inside the exhaust vent. The more dust you can remove, the cooler your laptop will run. You should see a measurable difference before and after.
If it's running too hot, even after blowing it out, you might consider replacing the thermal paste on the heatsink. That's a bit more involved and it requires removing the backplate and heatsink, but not particularly difficult. You can google "thermal paste laptop" - there's a ton of youtube videos available that you can watch to get...