November 1, 2025Nov 1 Hello, I'm encountering an issue with the above combination. Everything runs smoothly until I get the descend instruction from Pro-ATC/X. The simulation immediately stutters intermittently for +/- 15 seconds. When de-activating Pro-ATC/X at that point, I get no more stutters. It is not aircraft related as I have tried several types all with the same result. Am using Windows 11 Pro and have set Pro-ATC/X to run in high priority mode but this has made no difference. Any advise / tips would be appreciated. Thank you. Herman PC Intel i9-9900KF | Asus ROG STRIX Z390-E GAMING motherboard | Corsair 64GB DDR4-3200 RAM | 2+4TB Samsung 970 EVO PLUS M.2 SSD's | 3x 6TB Seagate 7200rpm harddisks | Gigabyte Aorus Xtreme RTX2080 Ti 11GB video card | Edifier 2000 speakers | Trustmaster T.1600M Hotas + CH Pedals | P3DV5.3 😃
November 4, 2025Nov 4 It's most likely saturation of the Simconnect interface stream. If it isn't already disabled, you might try disabling the Nagle algorithm in the simconnect.xml file (and simconnect.cfg if operating over a LAN). That causes the network driver to save up packets until either a full frame is ready for transmission or a timer expires--if PATC/X is sending/receiving a big gulp of data concurrent with that descent instruction it might account for it. Fiddling with the CPU priority won't fix that. Also, if running PATC/X on the same PC as the sim, you can set the protocol to "pipe" to bypass firewall and A/V interference. See: https://www.prepar3d.com/SDKv5/sdk/simconnect_api/configuration_files/configuration_files_overview.html P3D can be a bit limited in available simconnect bandwidth. If you're also running other complex add-ons, they all have to share the available bandwidth, and it can get saturated during periods of intense I/O activity. 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
November 4, 2025Nov 4 Author Thank you, Bob. I'll take a look at the point made in your explanation. Cheers, Herman PC Intel i9-9900KF | Asus ROG STRIX Z390-E GAMING motherboard | Corsair 64GB DDR4-3200 RAM | 2+4TB Samsung 970 EVO PLUS M.2 SSD's | 3x 6TB Seagate 7200rpm harddisks | Gigabyte Aorus Xtreme RTX2080 Ti 11GB video card | Edifier 2000 speakers | Trustmaster T.1600M Hotas + CH Pedals | P3DV5.3 😃
November 7, 2025Nov 7 Author Bob, just some feedback on the steps taken... Tried it and unfortunately did not work. In fact, after making step by step adjustments to the Simcconect. xml file, Pro-ATC/ X would spontaneously terminate during taxiing or flight. Had left a request for support on the Pointsoftware Pro-ATC forum but the are totally unresponsive! In thr meantime, I've decided to abandon Pro-ATC/X for Pilot2ATC. Would have contemplated purchasing Pro-ATC/SR, however, with the lack of response expressed via their support forum, it led to an easy choice to move away from their product. Again, Bob, thanks for your above response. Herman PC Intel i9-9900KF | Asus ROG STRIX Z390-E GAMING motherboard | Corsair 64GB DDR4-3200 RAM | 2+4TB Samsung 970 EVO PLUS M.2 SSD's | 3x 6TB Seagate 7200rpm harddisks | Gigabyte Aorus Xtreme RTX2080 Ti 11GB video card | Edifier 2000 speakers | Trustmaster T.1600M Hotas + CH Pedals | P3DV5.3 😃
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