October 30, 20232 yr On 10/27/2023 at 9:00 PM, RandallR said: I've been running DX12 for some time now with good results Your mileage may vary but I had lots of issues with DX12 and since I'm back on DX11 the sim runs better than ever.
October 30, 20232 yr Author 7 hours ago, AnkH said: You are still hugely CPU limited with such a low GPU usage. I would invest this GPU overhead in better image quality (by increasing render scale for example) as it is a known fact that if you move more load over to the GPU and reduce CPU limitation, you sim will run smoother. I agree to a point but right now I'm just attempting to be able to fly at all. When I've increased render scaling in the past the performance tanked - when I reduced it to about 100 things were better. I'll try boosting Render Scaling again and see what happens - it could be that with the other adjustments I've made I'll get better results. As far as DX12 is concerned, one thing at a time. If everything improves and I get continuous smooth flying again I'll leave it be, If I get large variances in performance again I'll drop back to DX11 and test it out. I'll be replacing the thermal paste tomorrow (I have it in-hand but need some 91% Isopropyl), Randall Rocke
November 1, 20232 yr Author Updating: After getting CPU temps in the 95° area (in flight) I finally refreshed my thermal paste. The fan noise has backed off quite a bit and it's running about 84°. I'm running Render scaling at 140 for now. Everything is running smoothly - no more stuttering. I'm getting 19-27fps in cloudy weather/city-scapes and 22-30fps with more open landscapes and moderate clouds. I did try increasing scaling up to 200 - there was still room left for the CPU, BUT fps dropped. I was getting tearing with VSync off so I turned it back on - no drop in performance. Randall Rocke
November 1, 20232 yr That's a meaningful drop in temps, glad you got control of the problem you were having. Though you're no longer thermal throttling, a consistent 85c is still rather hot IMHO. My computer usually runs MSFS in the mid 60s, with infrequent and short lived excursions into the low-mid 80s. Bottom line is if you're back to where you were, Happy Contrails! Edited November 2, 20232 yr by TheFamilyMan CPU: AMD 9800X3D PBO MB +200 CO -25| Motherboard: MSI MAG X870e Tomahawk WiFi | GPU: MSI RTX 5090 Ventus 3X OC | RAM: G.Skill 2x32GB DDR5 6000 cas 30 | M.2 SSDs: Samsung 990 EVO Plus 2T, WD Black SN750 M.2 1T | Hard Drive: WD Black HDD 6T 7200 | Optical Drive: LG Bluray writer, internal | Cooling: Thermalright Phantom Spirit 120 EVO | Case: Fractal Design Focus G | PSU: NZXT C1200 1200W Win 11 Pro 64|HP Reverb G2 revised VR HMD|Asus 25" IPS 2K 60Hz monitor|Saitek X52 Pro & Peddles|TIR 5 (now retired)
November 2, 20232 yr Author I thought I might get more of a temperature drop, though it could have been the weather. If I get a clearer day I'll take another measurement. Randall Rocke
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