Hi all,
I've been having performance issues with FlightGear 2018.3.2. I run the sim on a gaming laptop with fairly solid specs - i5-6300HQ, 8GB DDR4 RAM and a GTX 960M with 4GB DDR5 VRAM - yet my framerates are low and get worse over time, dropping from 45fps to 10-15fps over the course of two hours.
Surprisingly though, my CPU and GPU usage never exceed 65% and my temps are in the normal range, which tells me that the program is not utilising the full power of the system at all. I run maxed-out ALS at 1920x1080 with no MSAA as I'm sure my system should handle that at a minimum of 35fps at any given location as I've tested, but I only get smooth frames at the start of the simulation and then performance takes a nosedive.
What might be the cause? Is it just my system, or is the sim not fully performance-optimised yet? Or perhaps it's the aircraft I fly (IDG-A32X)?