OK, log below after adding those lines. I had the Saitek software installed but it occasionally caused button presses to be sent to windows when I wasn't in a game so I deleted it and ran a ccleaner registry clean afterwards. Other than that, I installed joyID's after reading another thread on here, but as far as I know that doesn't run in the background, and this problem pre-dates that install anyway. Can't think of anything else that could cause the problem? I use the PMDG 737 NGX, Air Hauler, P3D V3, Pro ATC/X and ASN. The issue pre-dates install of the 737 and Pro ATC/X at least though, and happens even when I haven't opened ASN or AH before I launch P3D.
********* FSUIPC4, Version 4.948e by Pete Dowson *********
Prepar3D.exe version = 3.0.10.14945
Reading options from "E:\Lockheed Martin\Prepar3D v3\Modules\FSUIPC4.ini"
Running inside Prepar3D v3 on Windows 8.0
Module base=16D90000
User Name=""
User Addr="vfrhawk@hotmail.com"
FSUIPC4 Key is provided
WideFS7 Key is provided
454 System time = 18/12/2015 16:14:57
454 FLT UNC path = "\\GAMINGRIG\Users\\Documents\Prepar3D v3 Files\"
454 ------ Module Version Check ------
454 acontain.dll: 3.0.10.14945
454 api.dll: 3.0.10.14945
454 controls.dll: 3.0.10.14945
454 fs-traffic.dll: 3.0.10.14945
454 G3D.dll: 3.0.10.14945
454 sim1.dll: 3.0.10.14945
454 visualfx.dll: 3.0.10.14945
454 weather.dll: 3.0.10.14945
454 window.dll: 3.0.10.14945
454 ----------------------------------
454 Trying E:\Lockheed Martin\Prepar3D v3\Modules\SimConnectP3D2.dll
500 Found it: trying to connect
500 FS UNC path = "E:\Lockheed Martin\Prepar3D v3\"
579 #### Initialising Dlrectinput Axis Scanning ...
594 Trying: "HKCU\SYSTEM\CurrentControlSet\Control\MediaProperties\PrivateProperties\DirectInput\VID_0738&PID_A215\Calibration\0"
594 Found correct joystick Id 0
594 ... and a "GUID" value
610 ... okay, Acquired device as #0
610 Trying: "HKCU\SYSTEM\CurrentControlSet\Control\MediaProperties\PrivateProperties\DirectInput\VID_0738&PID_2215\Calibration\0"
610 Found correct joystick Id 1
610 ... and a "GUID" value
610 ... okay, Acquired device as #1
610 Trying: "HKCU\SYSTEM\CurrentControlSet\Control\MediaProperties\PrivateProperties\DirectInput\VID_06A3&PID_0763\Calibration\0"
610 Found correct joystick Id 2
610 ... and a "GUID" value
610 ... okay, Acquired device as #2
610 ---------------------- Joystick Device Scan -----------------------
610 Checking: \\?\hid#vid_0951&pid_16a4&mi_03&col01#7&1c94fa2&1&0000#{4d1e55b2-f16f-11cf-88cb-001111000030}
610 Checking: \\?\hid#vid_1b1c&pid_1c0d#6&390dc39e&1&0000#{4d1e55b2-f16f-11cf-88cb-001111000030}
610 Checking: \\?\hid#vid_0738&pid_a215&mi_02#8&2e6068d8&0&0000#{4d1e55b2-f16f-11cf-88cb-001111000030}
610 Checking: \\?\hid#vid_e0ff&pid_0002&mi_01&col01#8&b67a4cb&0&0000#{4d1e55b2-f16f-11cf-88cb-001111000030}
610 Checking: \\?\hid#vid_0951&pid_16a4&mi_03&col02#7&1c94fa2&1&0001#{4d1e55b2-f16f-11cf-88cb-001111000030}
610 Checking: \\?\hid#vid_06a3&pid_0763#6&32b02881&0&0000#{4d1e55b2-f16f-11cf-88cb-001111000030}
610 Product= Saitek Pro Flight Rudder Pedals
610 Manufacturer= Saitek
610 Vendor=06A3, Product=0763 (Version 1.1)
610 Serial Number= Saitek
610 Checking: \\?\hid#vid_e0ff&pid_0002&mi_00#8&1e97c109&0&0000#{4d1e55b2-f16f-11cf-88cb-001111000030}
610 Checking: \\?\hid#vid_e0ff&pid_0002&mi_01&col02#8&b67a4cb&0&0001#{4d1e55b2-f16f-11cf-88cb-001111000030}
610 Checking: \\?\hid#vid_0951&pid_16a4&mi_03&col03#7&1c94fa2&1&0002#{4d1e55b2-f16f-11cf-88cb-001111000030}
610 Checking: \\?\hid#vid_0738&pid_2215&mi_02#9&114007b2&0&0000#{4d1e55b2-f16f-11cf-88cb-001111000030}
610 Checking: \\?\hid#vid_045e&pid_074b&mi_01#7&34e2812d&0&0000#{4d1e55b2-f16f-11cf-88cb-001111000030}
610 Checking: \\?\hid#vid_e0ff&pid_0002&mi_01&col03#8&b67a4cb&0&0002#{4d1e55b2-f16f-11cf-88cb-001111000030}
610 Checking: \\?\hid#vid_0738&pid_a215&mi_00#8&3a741a55&0&0000#{4d1e55b2-f16f-11cf-88cb-001111000030}
610 Product= Saitek Pro Flight X-55 Rhino Throttle
610 Manufacturer= Madcatz
610 Vendor=0738, Product=A215 (Version 0.119)
610 Serial Number= G0000836
610 Checking: \\?\hid#vid_0738&pid_2215&mi_00#9&366e73d2&0&0000#{4d1e55b2-f16f-11cf-88cb-001111000030}
610 Product= Saitek Pro Flight X-55 Rhino Stick
610 Manufacturer= Madcatz
610 Vendor=0738, Product=2215 (Version 0.87)
610 Serial Number= G0001495
610 Checking: \\?\hid#vid_045e&pid_074b&mi_00#7&110b436b&0&0000#{4d1e55b2-f16f-11cf-88cb-001111000030}
610 -------------------------------------------------------------------
610 #### Completed Dlrectinput Axis Scanning
610 ---------- Making INI JoyNames Section ----------
610 Joy#0: Finding name in "HKCU\SYSTEM\CurrentControlSet\Control\MediaProperties\PrivateProperties\Joystick\OEM\VID_0738&PID_A215\"
610 Joy#0: OEMName = "Saitek Pro Flight X-55 Rhino Throttle"
610 Joy#0: GUID = {C94D6E20-8269-11E5-8005-444553540000}
610 Joy#1: Finding name in "HKCU\SYSTEM\CurrentControlSet\Control\MediaProperties\PrivateProperties\Joystick\OEM\VID_0738&PID_2215\"
610 Joy#1: OEMName = "Saitek Pro Flight X-55 Rhino Stick"
625 Joy#1: GUID = {C94D9530-8269-11E5-8007-444553540000}
625 Joy#2: Finding name in "HKCU\SYSTEM\CurrentControlSet\Control\MediaProperties\PrivateProperties\Joystick\OEM\VID_06A3&PID_0763\"
625 Joy#2: OEMName = "Saitek Pro Flight Rudder Pedals"
625 Joy#2: GUID = {C94DBC40-8269-11E5-8009-444553540000}
625 -------------------------------------------------
641 Device at "\\?\hid#vid_0951&pid_16a4&mi_03&col01#7&1c94fa2&1&0000#{4d1e55b2-f16f-11cf-88cb-001111000030}"
641 HID: Vendor=0951, Product=16A4 (Version 0.3)
641 Manufacturer= Kingston
672 Product= HyperX 7.1 Audio
672 Serial Number= 00000000
672 Device at "\\?\hid#vid_1b1c&pid_1c0d#6&390dc39e&1&0000#{4d1e55b2-f16f-11cf-88cb-001111000030}"
672 HID: Vendor=1B1C, Product=1C0D (Version 0.2)
688 Manufacturer=
688 Product=
688 Serial Number=
688 Device at "\\?\hid#vid_0738&pid_a215&mi_02#8&2e6068d8&0&0000#{4d1e55b2-f16f-11cf-88cb-001111000030}"
688 HID: Vendor=0738, Product=A215 (Version 0.119)
688 Manufacturer= Madcatz
688 Product= Saitek Pro Flight X-55 Rhino Throttle
688 Serial Number= G0000836
688 Device at "\\?\hid#vid_e0ff&pid_0002&mi_01&col01#8&b67a4cb&0&0000#{4d1e55b2-f16f-11cf-88cb-001111000030}"
688 HID: Vendor=E0FF, Product=0002 (Version 0.1)
688 Manufacturer= A.....
688 Product= Shogun Bros. Ballista MK-I Mouse
688 Serial Number= Shogun Bros. Ballista MK-I Mouse
688 Device at "\\?\hid#vid_0951&pid_16a4&mi_03&col02#7&1c94fa2&1&0001#{4d1e55b2-f16f-11cf-88cb-001111000030}"
688 HID: Vendor=0951, Product=16A4 (Version 0.3)
704 Manufacturer= Kingston
719 Product= HyperX 7.1 Audio
735 Serial Number= 00000000
735 Device at "\\?\hid#vid_06a3&pid_0763#6&32b02881&0&0000#{4d1e55b2-f16f-11cf-88cb-001111000030}"
735 HID: Vendor=06A3, Product=0763 (Version 1.1)
735 Manufacturer= Saitek
735 Product= Saitek Pro Flight Rudder Pedals
735 Serial Number= Saitek Pro Flight Rudder Pedals
735 Device at "\\?\hid#vid_0951&pid_16a4&mi_03&col03#7&1c94fa2&1&0002#{4d1e55b2-f16f-11cf-88cb-001111000030}"
735 HID: Vendor=0951, Product=16A4 (Version 0.3)
750 Manufacturer= Kingston
766 Product= HyperX 7.1 Audio
782 Serial Number= 00000000
782 Device at "\\?\hid#vid_0738&pid_2215&mi_02#9&114007b2&0&0000#{4d1e55b2-f16f-11cf-88cb-001111000030}"
782 HID: Vendor=0738, Product=2215 (Version 0.87)
782 Manufacturer= Madcatz
782 Product= Saitek Pro Flight X-55 Rhino Stick
782 Serial Number= G0001495
782 Device at "\\?\hid#vid_045e&pid_074b&mi_01#7&34e2812d&0&0000#{4d1e55b2-f16f-11cf-88cb-001111000030}"
782 HID: Vendor=045E, Product=074B (Version 2.96)
782 Manufacturer= Microsoft
782 Product= Microsoft® SiderWinderTM X6 Keyboard
782 Serial Number= Microsoft® SiderWinderTM X6 Keyboard
782 Device at "\\?\hid#vid_e0ff&pid_0002&mi_01&col03#8&b67a4cb&0&0002#{4d1e55b2-f16f-11cf-88cb-001111000030}"
782 HID: Vendor=E0FF, Product=0002 (Version 0.1)
782 Manufacturer= A.....
782 Product= Shogun Bros. Ballista MK-I Mouse
782 Serial Number= Shogun Bros. Ballista MK-I Mouse
782 Device at "\\?\hid#vid_0738&pid_a215&mi_00#8&3a741a55&0&0000#{4d1e55b2-f16f-11cf-88cb-001111000030}"
782 HID: Vendor=0738, Product=A215 (Version 0.119)
782 Manufacturer= Madcatz
782 Product= Saitek Pro Flight X-55 Rhino Throttle
782 Serial Number= G0000836
782 Device at "\\?\hid#vid_0738&pid_2215&mi_00#9&366e73d2&0&0000#{4d1e55b2-f16f-11cf-88cb-001111000030}"
782 HID: Vendor=0738, Product=2215 (Version 0.87)
782 Manufacturer= Madcatz
797 Product= Saitek Pro Flight X-55 Rhino Stick
797 Serial Number=
797 LogOptions=00000000 02002011
797 -------------------------------------------------------------------
797 ------ Setting the hooks and direct calls into the simulator ------
797 --- CONTROLS timer memory location obtained ok
797 --- SIM1 Frictions access gained
797 --- FS Controls Table located ok
797 --- Installed Mouse Macro hooks ok.
797 --- Wind smoothing fix is installed
797 --- All links okay (except older global weather setting method)
797 -------------------------------------------------------------------
797 SimConnect_Open succeeded: waiting to check version okay
797 Trying to use SimConnect Prepar3D
4610 Running in "Lockheed Martin® Prepar3D® v3", Version: 3.0.3.0 (SimConnect: 3.0.0.0)
4610 Initialising SimConnect data requests now
4610 FSUIPC Menu entry added
4625 Ready Flags: Ready-To-Fly=N, In Menu=Y, In Dlg=Y
4625 \\GAMINGRIG\Users\\Documents\Prepar3D v3 Files\Default.fxml
4625 E:\Lockheed Martin\Prepar3D v3\SimObjects\Airplanes\beech_baron_58\Beech_Baron_58.air
4829 Memory in use: 788Mb, Avail=3308Mb
47532 Ready Flags: Ready-To-Fly=N, In Menu=N, In Dlg=N
48000 System time = 18/12/2015 16:15:44, Simulator time = 16:15:02 (16:15Z)
48000 Aircraft="Beech Baron 58 w G1000"
49016 Starting everything now ...
49047 Ready Flags: Ready-To-Fly=Y, In Menu=N, In Dlg=N
49079 ASN active function link set
49079 Ready for ASN WX radar
50172 Advanced Weather Interface Enabled
56047 Ready Flags: Ready-To-Fly=Y, In Menu=Y, In Dlg=Y
65063 Memory in use: 2546Mb, Avail=1550Mb
76063 ---------- Making INI JoyNames Section ----------
76063 Joy#0: Finding name in "HKCU\SYSTEM\CurrentControlSet\Control\MediaProperties\PrivateProperties\Joystick\OEM\VID_0738&PID_A215\"
76063 Joy#0: OEMName = "Saitek Pro Flight X-55 Rhino Throttle"
76063 Joy#0: GUID = {C94D6E20-8269-11E5-8005-444553540000}
76063 Joy#1: Finding name in "HKCU\SYSTEM\CurrentControlSet\Control\MediaProperties\PrivateProperties\Joystick\OEM\VID_0738&PID_2215\"
76063 Joy#1: OEMName = "Saitek Pro Flight X-55 Rhino Stick"
76063 Joy#1: GUID = {C94D9530-8269-11E5-8007-444553540000}
76063 Joy#2: Finding name in "HKCU\SYSTEM\CurrentControlSet\Control\MediaProperties\PrivateProperties\Joystick\OEM\VID_06A3&PID_0763\"
76063 Joy#2: OEMName = "Saitek Pro Flight Rudder Pedals"
76079 Joy#2: GUID = {C94DBC40-8269-11E5-8009-444553540000}
76079 -------------------------------------------------
76360 Ready Flags: Ready-To-Fly=Y, In Menu=N, In Dlg=N
82797 Ready Flags: Ready-To-Fly=Y, In Menu=Y, In Dlg=Y
100750 === NOTE: not calling SimConnect_Close ...
101750 System time = 18/12/2015 16:16:38, Simulator time = 16:15:14 (16:15Z)
101750 *** FSUIPC log file being closed
Minimum frame rate was 45.0 fps, Maximum was 50.8 fps
Minimum available memory recorded was 1539Mb
Average frame rate for running time of 13 secs = 45.8 fps
Memory managed: 37 Allocs, 37 Freed
********* FSUIPC Log file closed ***********