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Hey everyone, I built my PC in 2017 to run DCS 1.5 and it ran it perfectly with no problems or FPS drops at Highest Graphic settings but then 2.5 came and I couldn't run my game at highest settings anymore so I had to downgrade the graphic settings and I still managed play the game/simulator with the same computer with good FPS for 4 years. I was bored today and decided to go on DCS World and see which graphics settings have most impact on FPS so I did quick tests and on each option during testing my game kept crashing after loading few missions(Fixed in an update) so I hope it was worth it and here are my results and findings and what configuration I use. This is my first time creating a guide so don't expect much from it. Here are my computer specs: CPU: i5-7600K 4 Cores Overclocked to 4.5GHz. Memory: 2x8GB(16) DDR4 2400MHz. SSD: Crucial M.2 1TB SSD 2400MB/s Reading Speed and 1800MB/s Writing Speed. <---Highly Recommended if you are using a hard drive GPU: MSI GTX1060 6GB X VR Ready. Screen: 1080p 240Hz 27Inch Curved AOC. VR Headset: Oculus Quest 2 via Air Link 5408x2736 90Hz. (25-45FPS with same settings as 2D) Here are my current graphic settings with how my computer handled it: Lowest Frames Per Second: 45 FPS Average Frames Per Second: 60 FPS Highest Frames Per Second: 90 FPS CPU Usage: 45-100% GPU Usage: 99-100% Memory Usage: 14.1-15.1 GB out of 16 GB (Turns out game uses SSD as Virtual Memory when RAM usage is almost full check out this guide and make sure you only enable file paging on SSD I set my to 32000/64000MB) Note^: (Depending on the situation from being on the carrier on multiplayer with rainy weather to being 30,000ft in the Air) How it looks like in game: Here are my results and findings tested on Caucasus map with the F/A-18C: Textures: Low to High, About 1FPS decrease and cockpit looks way better I wouldn't recommend switching to Low unless you need every single FPS. Terrain Textures: Low to High, I didn't notice any FPS or Graphical change even though the game restarted when changing the option so I don't know about this one so I kept it at High. Civ. Traffic: Off to High, No FPS loss just low detailed vehicles driving on the road and going through tanks and anything placed with mission editor so I keep it OFF to not ruin my immersion when doing Air to Ground Missions. Water: Low to High, 20FPS decrease and didn't notice any water quality change high in the air so I put it on Low. (Only noticeable when comparing side to side images) Visibility Range: Low to Ultra, 5-6FPS decrease buildings and objects can be seen from far away without needing to zoom to make them magically appear I recommend setting it to Ultra or Extreme. Heat Blur: OFF to High, Didn't notice any FPS decrease so I switched it to High to have the realistic After Burner/Engine Heat Blur at the back of the Jet. Shadows: OFF to High, About 6FPS decrease it isn't that much of a performance hit from no Aircraft Shadows to having a high detailed Aircraft Shadows. Resolution of Cockpit Displays(Mirrors): 256 to 1024 Every Frame, Didn't notice any performance difference so I kept it at 1024 Every Frame. MSAA(Anti-Aliasing): OFF to 4x, About 15FPS Decrease I prefer to have this option on 2X to not have obvious jagged pixelated edges without having much of performance decrease. Depth of Field: OFF to Simple/Bokeh, 20-40FPS Decrease on external view, I prefer to have it OFF to not have any Blurriness or performance decrease. Lens Effects: None to Dirt+Flare, 1FPS Decrease I prefer to have it on None to not get blinded by the sun. Motion Blur: I prefer to have it OFF to not have any Blur and have good visibility. Clouds: Low to Ultra, 5FPS Decrease with Minor Quality change I chose Standard for optimal performance. SSAA(Anti-Aliasing): OFF to 2X, 35FPS Decrease it becomes unplayable for me with this option so I recommend having it OFF if you don't want massive performance decrease. This option removes jagged or pixelated edges. SSLR(Light Reflections): OFF to ON, About 8FPS Decrease so I prefer to have it ON for better lighting and light reflections. SSAO(Ambient Occlusion): OFF to ON, About 10-15FPS Decrease I prefer to have it OFF, no major difference the only thing I noticed was the reflection of the screens and better reflections off the instruments and it wasn't that noticeable. Also it's suppose to make scenery blend more such as shadows and look more natural. (Only noticeable when comparing side to side) Clutter/Grass: 0 to 1500, Up to 30FPS Decrease in a very grass dense area, It's best to not max out the setting, also Grass is not noticeable from the Air and doesn't decrease performance when flying High above 7000ft. Forest Visibility: 30% to 100%, 5FPS Decrease, on 30% trees don't load until you get close so I prefer to have it on 70% to be able to see all Trees around me and not render insignificant unnoticeable far away Trees. Forest Details Factor: 0.1 to 1, 1FPS Decrease, Trees Textures look better and detailed. Scenery Details Factor: 0.1 to 1, 1FPS Decrease, Buildings and Structures Textures look better and detailed. Preload Radius: 100 to 100000, Didn't notice any performance difference probably because I'm using an SSD but this may effect people on HDD, Slow CPUs and low RAM. (Do not use above 75,000 if you have 16GB of RAM or less, Use less Preload Radius if you start experiencing random crashes specially on multiplayer.) Gamma(Brightness): Doesn't really effect FPS I prefer to have it on 1.6 for dark and not bright atmosphere. You can increase it depending on how you prefer it. Anisotropic Filtering: OFF to 16x, 18FPS Decrease I prefer to have it on 8x to see distanced objects with high detail if you want performance over quality turn it OFF. Terrain Objects Shadows: Flat to Default, 10FPS Decrease Shadows look better and more detailed and not pixelated. Flat to OFF, 3FPS increase not much increase so I chose to have it on Flat to at least have Shadows on Trees and Buildings. Cockpit Global Illumination: Makes Lighting in the cockpit dynamic I prefer to have it ON. Rain Droplets: OFF to ON, 2-3 FPS Decrease, I prefer to have it ON to see water droplets on canopy if you want bit more FPS have it OFF. Vsync: Limits or Syncs Frames Per Second(FPS) to Monitor/Screen Refresh Rate(Hz), I prefer to have it OFF to not limit my performance. Note: I just realized some of my tests aren't the most accurate but they are precise they should give a good idea on which options have the most impact on FPS. Also here's a very useful Video made by "Commander Steinsch" shows how much visual difference each option does, I don't recommended doing same settings as the Video though. Note: For Mariana Islands scroll down below. Thank you for checking out my post and hope it helped you out, if you have any suggestions or questions go ahead and ask I would happily reply.
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