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P3DV4.5 has started to slow down on my more than capable rig

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Hey guys...so the last few weeks or so, my sim has started to slow down. Seems like my frames are running in the low 20's at best, and then the mid teens when I'm at a big airport with a 3rd party addon, weather, or ai traffic. Not sure what I can do to fix this and speed it up a bit. I haven't installed anything new or tweaked any settings. Before a few weeks ago, I would be in the 30fps range if not more. Here are my specs:
 
i7 8700k
Samsung Evo 970 250GB
Asus ROG 2080ti
Corsair Vengeance RGB Pro 16GB DDR4 3200
Corsair Hydro Series H115i RGB

I'd start by looking for something running in the background--virus checker scan, file indexing etc.

Just because *you* didn't change anything doesn't mean Win 10 didn't come in and do it for you.  Check your update history to see if a recent Windows update coincides with the change in performance.

Something like a failed fan or a loose aux power connector on a GPU can also cause slowdowns.  If the usual software culprits are eliminated, then a look-see around the computer may be in order.

 

Bob Scott | President and CEO, AVSIM Inc
ATP Gulfstream II-III-IV-V

Sys1 (MSFS20+24/XPlane12+11): AMD 9800X3D, water 2x240mm, MSI MPG X670E Carbon, 64GB GSkill 6000/30, nVidia RTX4090FE
Alienware AW3821DW 38" 21:9 GSync, 2x4TB Crucial T705 PCIe5 + 2x2TB Samsung 990 SSD, EVGA 1000P2 PSU, 12.9" iPad Pro
Thrustmaster TCA Boeing Yoke, TCA Airbus Sidestick, Twin TCA Airbus Throttle quads, PFC Cirrus Pedals, Coolermaster HAF932 case

Sys2 (P3Dv5/v4): i9-13900KS, water 2x360mm, ASUS Z790 Hero, 32GB GSkill 7800MHz CAS36, ASUS RTX4090
Samsung 55" JS8500 4K TV@60Hz,
3x 2TB WD SN850X 1x 4TB Crucial P3 M.2 NVME SSD, EVGA 1600T2 PSU
Fiber link to Yamaha RX-V467 Home Theater Receiver, Polk/Klipsch 6" bookshelf speakers, Polk 12" subwoofer, 12.9" iPad Pro
PFC yoke/throttle quad/pedals with custom Hall sensor retrofit, Thermaltake View 71 case, Stream Deck XL button box

Sys3 (DCS/P3Dv4/ATS/ETS): AMD 7800X3D, MSI MPG X870E Carbon, Noctua NH-D15S, 64GB GSkill 6000/30, EVGA RTX3090
Alienware AW3420DW 34" 21:9 GSync, Corsair HX1000i PSU, 4TB Crucial T705 PCIe5 + 2TB Samsung 970Evo Plus,
TM TCA Officer Pack
, Saitek combat pedals, TM Warthog, TM RS300 FF wheel/pedals, Coolermaster HAF XB case

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