I have a copy of FSX and love the game. However, with addons to enhance the appearance of the game I get a message telling me I’m out of memory after a short while of flying, less than an hour and one half. I was told that this is because Flight Simulator is 32 bit and no matter how much RAM I have, the game will only recognize the first 4GB. My PC has 16GB of RAM, an i9 8950HK, six core processor. Also, the SSD is a 2TB Samsung 970 Pro (NVMe) and a Nvidia 1050 Ti (4GB) video card. I have installed several US states that are photo real and I have left the HD water enhancement installed. I have also adjusted the settings within Flight Simulator to the lowest settings that still give me a good frame rate and realistic look. Is there no way around the 4GB limit? No utility to access RAM above 4GB? I’ve also stopped as much as I can from loading when my PC boots up. Many thanks to all, Blair... PS, my OS is Win 10 Pro..