aceridgey Posted July 5, 2014 Report Share Posted July 5, 2014 Hi guys, Super quick one, using the FSIUPC axis config (going directly though FSUIPC) there is noticable input lag between my physical hardware and in the sim. I am not for a second saying that this is a fault with FSUIPC but I wondered if there was a fix for it? Kind regards, Alex Link to comment Share on other sites More sharing options...
Pete Dowson Posted July 5, 2014 Report Share Posted July 5, 2014 Super quick one, using the FSIUPC axis config (going directly though FSUIPC) there is noticable input lag between my physical hardware and in the sim. Assuming you are talking about reactions in a fighter or stunt aircraft, where you expect and need an immediate response, and not in an airliner which has natural inertia in all axes and even throttle results on the engines, there are only two causes of delays I can think of, and they should usually be barely noticeable. The first is using the Filter option in FSUIPC's calibration. That needs a sequence of inputs to formulate the next result going into FS, and can in some circumstances and controls produce a slight lag. The filter option is only suitable for drastic control instability, of the type usually caused by bad power supplies. The second is caused by having the Delta value, in the axis assignments tab, set too low. The default of 512 or 256 should be good for a properly calibrated (in Windows) axis. If it is too low you will get multiple small changes flooding the message queue. There is actually also a third possibility I've just thought of and that is where add-on aircraft (or other programs, actually) are flooding the message queues with commands too. I've noticed that some of PMDG's aircraft repeatedly send the same controls over and over for no reason apparent to me. To see if this sort of thing is responsible, enable Event logging in FSUIPC's logging page and take a look at the log generated. Pete Link to comment Share on other sites More sharing options...
aceridgey Posted July 5, 2014 Author Report Share Posted July 5, 2014 Assuming you are talking about reactions in a fighter or stunt aircraft, where you expect and need an immediate response, and not in an airliner which has natural inertia in all axes and even throttle results on the engines, there are only two causes of delays I can think of, and they should usually be barely noticeable. The first is using the Filter option in FSUIPC's calibration. That needs a sequence of inputs to formulate the next result going into FS, and can in some circumstances and controls produce a slight lag. The filter option is only suitable for drastic control instability, of the type usually caused by bad power supplies. The second is caused by having the Delta value, in the axis assignments tab, set too low. The default of 512 or 256 should be good for a properly calibrated (in Windows) axis. If it is too low you will get multiple small changes flooding the message queue. There is actually also a third possibility I've just thought of and that is where add-on aircraft (or other programs, actually) are flooding the message queues with commands too. I've noticed that some of PMDG's aircraft repeatedly send the same controls over and over for no reason apparent to me. To see if this sort of thing is responsible, enable Event logging in FSUIPC's logging page and take a look at the log generated. Pete Hi Pete, hope you're well and thank you for the reply. I am indeed talking about PMDG aircraft where I am physically looking at the Yoke and moving my joystick at home. I will enable the log reporting and get back to you shortly Alex Link to comment Share on other sites More sharing options...
aceridgey Posted July 5, 2014 Author Report Share Posted July 5, 2014 Log file ********* FSUIPC4, Version 4.934 by Pete Dowson ********* User Name="Alex Ridge" User Addr= removed for forum post. FSUIPC4 Key is provided WIDEFS7 not user registered, or expired 84646 System time = 05/07/2014 11:47:28, Simulator time = 12:55:08 (11:55Z) [Continuation log requested by user] Running inside FSX on Windows 7 Module base=50A50000 84646 LogOptions changed, now 10000000 00000001 84974 Advanced Weather Interface Enabled 92556 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 5620 (0x000015f4) SPOILERS_SET 93024 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 0 (0x00000000) SPOILERS_SET 93320 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 5620 (0x000015f4) SPOILERS_SET 93960 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 0 (0x00000000) SPOILERS_SET 94038 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 5620 (0x000015f4) SPOILERS_SET 94209 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 5621 (0x000015f5) SPOILERS_SET 94272 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 5994 (0x0000176a) SPOILERS_SET 94334 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 6637 (0x000019ed) SPOILERS_SET 94443 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 7360 (0x00001cc0) SPOILERS_SET 94506 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 7667 (0x00001df3) SPOILERS_SET 94568 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 7909 (0x00001ee5) SPOILERS_SET 94646 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 7966 (0x00001f1e) SPOILERS_SET 94740 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 7438 (0x00001d0e) SPOILERS_SET 94802 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 7059 (0x00001b93) SPOILERS_SET 94880 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 6726 (0x00001a46) SPOILERS_SET 94974 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 6136 (0x000017f8) SPOILERS_SET 95052 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 5803 (0x000016ab) SPOILERS_SET 95114 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 5620 (0x000015f4) SPOILERS_SET 95442 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 5842 (0x000016d2) SPOILERS_SET 95520 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 5727 (0x0000165f) SPOILERS_SET 95582 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 5620 (0x000015f4) SPOILERS_SET 95894 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 0 (0x00000000) SPOILERS_SET 104568 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 5620 (0x000015f4) SPOILERS_SET 104802 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 0 (0x00000000) SPOILERS_SET 105348 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 5620 (0x000015f4) SPOILERS_SET 105519 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 0 (0x00000000) SPOILERS_SET 106128 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 5620 (0x000015f4) SPOILERS_SET 106284 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 0 (0x00000000) SPOILERS_SET 106892 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 5620 (0x000015f4) SPOILERS_SET 107235 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 0 (0x00000000) SPOILERS_SET 107594 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 5620 (0x000015f4) SPOILERS_SET 107672 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 5803 (0x000016ab) SPOILERS_SET 107766 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 6110 (0x000017de) SPOILERS_SET 107828 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 6268 (0x0000187c) SPOILERS_SET 107906 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 5980 (0x0000175c) SPOILERS_SET 108000 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 5620 (0x000015f4) SPOILERS_SET 108515 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 0 (0x00000000) SPOILERS_SET 108671 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 5620 (0x000015f4) SPOILERS_SET 108842 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 6171 (0x0000181b) SPOILERS_SET 108920 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 6397 (0x000018fd) SPOILERS_SET 108983 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 6082 (0x000017c2) SPOILERS_SET 109076 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 5620 (0x000015f4) SPOILERS_SET 109310 *** AXIS: Cntrl= 65786 (0x000100fa), Param= 0 (0x00000000) SPOILERS_SET 113678 Sim stopped: average frame rate for last 29 secs = 28.8 fps 117968 LogOptions changed, now 00000000 00000001 Link to comment Share on other sites More sharing options...
Pete Dowson Posted July 5, 2014 Report Share Posted July 5, 2014 Log file You are only logging Axis inputs -- the flooding I was talking about tend to be the other events. However, I don't know what you are doing with that spoiler axis. Do you keep moving it very very fast so somehow resulting in alternate larger numbers and zero (???), or is the axis faulty, or is it the PMDG aircraft trying to set it to zero against your wishes? If I were you I'd test things on a default aircraft before worrying about your axes on a PMDG one. Pete Link to comment Share on other sites More sharing options...
aceridgey Posted July 6, 2014 Author Report Share Posted July 6, 2014 You are only logging Axis inputs -- the flooding I was talking about tend to be the other events. However, I don't know what you are doing with that spoiler axis. Do you keep moving it very very fast so somehow resulting in alternate larger numbers and zero (???), or is the axis faulty, or is it the PMDG aircraft trying to set it to zero against your wishes? If I were you I'd test things on a default aircraft before worrying about your axes on a PMDG one. Pete Hi there, No idea what is happening with the spoiler axis, it is set to a axis wheel and is fixed. Other aircraft don't seem to have this issue. Alex Link to comment Share on other sites More sharing options...
Pete Dowson Posted July 6, 2014 Report Share Posted July 6, 2014 Hi there, No idea what is happening with the spoiler axis, it is set to a axis wheel and is fixed. Other aircraft don't seem to have this issue. Alex Seems you need to ask on the PMDG forum then. Pete Link to comment Share on other sites More sharing options...
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