Completely unplayable, big lag spikes every few seconds

[doc]

This started happening all of the sudden, it worked great for the last year or two but in the last few months it's been unusable. I get huge spikes every 1-2 seconds, all three lines on the graph go through the roof and the game locks up. I've tried every combination of hardware decoding on and off, set the maximum bandwidth to 3mb/s, enable and disabled vsync, tried window mode and fullscreen... can't think of anything else. My normal setup is 5ghz wifi but I'm testing with a wired connection.

Host: Windows 10 x64 GTX 760 i3570k @ 3.4ghz 8gb ram

Client: Windows 7 Ultimate i5 M460 @ 2.5ghz 4gb ram Intel onboard something or other gpu

[2015-12-30 20:42:09] "SessionStats"
{
"GameNameID" "UNKNOWN"
"TimeSubmitted" "1451526129"
"ResolutionX" "1360"
"ResolutionY" "766"
"CaptureDescriptionID" "Game polled D3D11 NV12 + NVENC H264"
"DecoderDescriptionID" "DXVA: H.264 variable-length decoder, no film grain technology (Intel ClearVideo)"
"BandwidthLimit" "5000"
"FramerateLimit" "0"
"SlowGamePercent" "0"
"SlowCapturePercent" "0"
"SlowConvertPercent" "0"
"SlowEncodePercent" "6.955162525177002"
"SlowNetworkPercent" "5.0595359802246094"
"SlowDecodePercent" "0.55431592464447021"
"SlowDisplayPercent" "0"
"AvgClientBitrate" "106.85852813720703"
"StdDevClientBitrate" "70.478324890136719"
"AvgServerBitrate" "2320.1513671875"
"StdDevServerBitrate" "8454.4814453125"
"AvgLinkBandwidth" "72928.71875"
"AvgPingMS" "2.1274421215057373"
"StdDevPingMS" "0.98785364627838135"
"AvgCaptureMS" "0.34032458066940308"
"StdDevCaptureMS" "1.1656932830810547"
"AvgConvertMS" "0.0084629431366920471"
"StdDevConvertMS" "0.073682323098182678"
"AvgEncodeMS" "11.81261157989502"
"StdDevEncodeMS" "11.442794799804687"
"AvgNetworkMS" "4.6410861015319824"
"StdDevNetworkMS" "9.6853170394897461"
"AvgDecodeMS" "2.5461077690124512"
"StdDevDecodeMS" "92.073944091796875"
"AvgDisplayMS" "6.2550358772277832"
"StdDevDisplayMS" "91.96514892578125"
"AvgFrameMS" "25.967992782592773"
"StdDevFrameMS" "94.518577575683594"
"AvgFPS" "54.242225646972656"
"StdDevFPS" "11.938713073730469"
"BigPicture" "0"
"KeyboardMouseInput" "1"
"GameControllerInput" "0"
"SteamControllerInput" "0"
}

[2015-12-30 20:42:09] >>> Capture method set to Game polled D3D11 NV12 + scale + NVENC H264
[2015-12-30 20:42:09] >>> Capture resolution set to 904x510
[2015-12-30 20:42:09] CLIENT: libav info: Reinit context to 912x512, pix_fmt: 61
[2015-12-30 20:42:09] CLIENT: Surface size changed from 1360x768 to 912x512, resetting decoder
[2015-12-30 20:42:09] CLIENT: libav error: decode_slice_header error
[2015-12-30 20:42:09] CLIENT: libav error: no frame!
[2015-12-30 20:42:09] CLIENT: Marking frame 7650 complete with status k_EStreamFrameResultDroppedDecodeCorrupt
[2015-12-30 20:42:09] CLIENT: DXVA init resetting SDL renderer
[2015-12-30 20:42:09] CLIENT: DXVA: Using device Intel(R) HD Graphics
[2015-12-30 20:42:09] CLIENT: DXVA: H.264 variable-length decoder, no film grain technology (Intel ClearVideo)
[2015-12-30 20:42:09] >>> Capture method set to Game polled D3D11 NV12 + NVENC H264
[2015-12-30 20:42:09] >>> Capture resolution set to 1360x766
[2015-12-30 20:42:09] CLIENT: Targeting 59.39 FPS
[2015-12-30 20:42:10] CLIENT: Surface size changed from 912x512 to 1360x768, resetting decoder
[2015-12-30 20:42:10] CLIENT: libav error: decode_slice_header error
[2015-12-30 20:42:10] CLIENT: libav error: no frame!
[2015-12-30 20:42:10] CLIENT: Marking frame 7651 complete with status k_EStreamFrameResultDroppedDecodeCorrupt
[2015-12-30 20:42:10] CLIENT: DXVA init resetting SDL renderer
[2015-12-30 20:42:10] CLIENT: DXVA: Using device Intel(R) HD Graphics
[2015-12-30 20:42:10] CLIENT: DXVA: H.264 variable-length decoder, no film grain technology (Intel ClearVideo)
[2015-12-30 20:42:10] CLIENT: Marking frame 7652 complete with status k_EStreamFrameResultDroppedReset
[2015-12-30 20:42:10] CLIENT: Marking frame 7654 complete with status k_EStreamFrameResultDroppedLate
[2015-12-30 20:42:10] CLIENT: Marking frame 7657 complete with status k_EStreamFrameResultDroppedLate
[2015-12-30 20:42:10] CLIENT: Marking frame 7658 complete with status k_EStreamFrameResultDroppedLate
[2015-12-30 20:42:10] CLIENT: Marking frame 7662 complete with status k_EStreamFrameResultDroppedLate
[2015-12-30 20:42:11] CLIENT: Targeting 59.39 FPS
[2015-12-30 20:42:11] Dropping queued frame before encoding
[2015-12-30 20:42:11] CLIENT: Got video sequence 7742, expected 7739, sending lost data notification
[2015-12-30 20:42:12] CLIENT: Marking frame 7709 complete with status k_EStreamFrameResultDroppedReset
[2015-12-30 20:42:12] CLIENT: Marking frame 7710 complete with status k_EStreamFrameResultDroppedReset
[2015-12-30 20:42:12] CLIENT: Marking frame 7711 complete with status k_EStreamFrameResultDroppedReset
[2015-12-30 20:42:12] CLIENT: Marking frame 7712 complete with status k_EStreamFrameResultDroppedReset
[2015-12-30 20:42:12] CLIENT: Marking frame 7713 complete with status k_EStreamFrameResultDroppedReset
[2015-12-30 20:42:12] CLIENT: Marking frame 7714 complete with status k_EStreamFrameResultDroppedReset
[2015-12-30 20:42:12] CLIENT: Marking frame 7715 complete with status k_EStreamFrameResultDroppedReset
[2015-12-30 20:42:12] CLIENT: Marking frame 7716 complete with status k_EStreamFrameResultDroppedReset
[2015-12-30 20:42:12] CLIENT: Marking frame 7717 complete with status k_EStreamFrameResultDroppedReset
[2015-12-30 20:42:12] CLIENT: Marking frame 7718 complete with status k_EStreamFrameResultDroppedReset
[2015-12-30 20:42:12] Dropping queued frame before encoding
[2015-12-30 20:42:13] CLIENT: Got video sequence 7794, expected 7793, sending lost data notification
[2015-12-30 20:42:13] Changing record window: 0004060C
[2015-12-30 20:42:13] >>> Switching video stream from GameOverlay_MovieStream_7768 to Desktop_MovieStream
[2015-12-30 20:42:13] CLIENT: Didn't get keyframe, resending lost data notification
[2015-12-30 20:42:13] CDesktopCaptureDWM: Reinitializing D3D for adapter 0x7331fc1
[2015-12-30 20:42:13] Video adapter: NVIDIA GeForce GTX 760, vendor ID: 0x10de, device ID: 0x1187
[2015-12-30 20:42:13] CDesktopCaptureDWM: desktop duplication enabled
[2015-12-30 20:42:13] >>> Capture method set to Desktop DWM NV12 + NVENC H264
[2015-12-30 20:42:13] >>> Capture resolution set to 448x376
[2015-12-30 20:42:13] >>> Capture method set to Desktop NVFBC NV12 + NVENC H264
[2015-12-30 20:42:13] >>> Capture resolution set to 1360x766
[2015-12-30 20:42:13] CLIENT: Marking frame 7765 complete with status k_EStreamFrameResultDroppedReset
[2015-12-30 20:42:13] CLIENT: Marking frame 7766 complete with status k_EStreamFrameResultDroppedReset
[2015-12-30 20:42:13] CLIENT: Marking frame 7767 complete with status k_EStreamFrameResultDroppedReset
[2015-12-30 20:42:13] CLIENT: Marking frame 7768 complete with status k_EStreamFrameResultDroppedReset
[2015-12-30 20:42:13] CLIENT: Marking frame 7769 complete with status k_EStreamFrameResultDroppedReset
[2015-12-30 20:42:13] CLIENT: Marking frame 7770 complete with status k_EStreamFrameResultDroppedReset
[2015-12-30 20:42:13] CLIENT: Marking frame 7771 complete with status k_EStreamFrameResultDroppedReset
[2015-12-30 20:42:13] CLIENT: libav info: Reinit context to 448x384, pix_fmt: 61
[2015-12-30 20:42:13] CLIENT: Surface size changed from 1360x768 to 448x384, resetting decoder
[2015-12-30 20:42:13] CLIENT: libav error: decode_slice_header error
[2015-12-30 20:42:13] CLIENT: libav error: no frame!
[2015-12-30 20:42:13] CLIENT: Marking frame 7772 complete with status k_EStreamFrameResultDroppedDecodeCorrupt
[2015-12-30 20:42:13] CLIENT: DXVA init resetting SDL renderer
[2015-12-30 20:42:13] CLIENT: DXVA: Using device Intel(R) HD Graphics
[2015-12-30 20:42:13] CLIENT: DXVA: H.264 variable-length decoder, no film grain technology (Intel ClearVideo)
[2015-12-30 20:42:13] CLIENT: Surface size changed from 448x384 to 1360x768, resetting decoder
[2015-12-30 20:42:13] CLIENT: libav error: decode_slice_header error
[2015-12-30 20:42:13] CLIENT: libav error: no frame!
[2015-12-30 20:42:13] CLIENT: Marking frame 7773 complete with status k_EStreamFrameResultDroppedDecodeCorrupt
[2015-12-30 20:42:13] CLIENT: libav error: decode_slice_header error
[2015-12-30 20:42:13] CLIENT: libav error: no frame!
[2015-12-30 20:42:13] CLIENT: Marking frame 7774 complete with status k_EStreamFrameResultDroppedDecodeCorrupt
[2015-12-30 20:42:13] CLIENT: DXVA init resetting SDL renderer
[2015-12-30 20:42:13] CLIENT: DXVA: Using device Intel(R) HD Graphics
[2015-12-30 20:42:13] CLIENT: DXVA: H.264 variable-length decoder, no film grain technology (Intel ClearVideo)
[2015-12-30 20:42:13] CLIENT: Marking frame 7775 complete with status k_EStreamFrameResultDroppedReset
[2015-12-30 20:42:13] CLIENT: Marking frame 7782 complete with status k_EStreamFrameResultDroppedLate
[2015-12-30 20:42:13] CLIENT: Had to wait 12 ms to get available buffer
[2015-12-30 20:42:13] CLIENT: Marking frame 7783 complete with status k_EStreamFrameResultDroppedLate
[2015-12-30 20:42:13] CLIENT: Marking frame 7785 complete with status k_EStreamFrameResultDroppedLate
[2015-12-30 20:42:14] CLIENT: Marking frame 7791 complete with status k_EStreamFrameResultDroppedLate
[2015-12-30 20:42:14] CLIENT: Marking frame 7793 complete with status k_EStreamFrameResultDroppedLate
[2015-12-30 20:42:15] >>> Switching video stream from Desktop_MovieStream to NONE
[2015-12-30 20:42:16] CLIENT: Targeting 59.39 FPS

[doc]

Any ideas? I've tried three different forums and no reponses, I have no idea what to do.