GStreamer fast pipeline

Hi guys,
I am using GStreamer on Jetson TX1 to decode rtsp stream and having some troubles with fps.
If video frame 800х600 everything looks pretty nice with 30 fps, but if frame size is 1200х800 fps drops to 15.
Here is my pipeline, any ideas how to speed it up?

gst-launch-1.0 rtspsrc location="rtsp://b1.dnsdojo.com:1935/live/sys3.stream" ! rtph264depay ! h264parse ! omxh264dec ! nvvidconv ! "video/x-raw, format=(string)RGBA" ! fpsdisplaysink video-sink=fakesink

Hi,
You may run

gst-launch-1.0 rtspsrc location="rtsp://b1.dnsdojo.com:1935/live/sys3.stream" ! rtph264depay ! h264parse ! omxh264dec ! fpsdisplaysink video-sink=nvoverlaysink text-overlay=false

DaneLLL, thanks for your reply. This pipeline still have 14-15 fps.
Here is log

gst-launch-1.0 rtspsrc location="rtsp://b1.dnsdojo.com:1935/live/sys3.stream" ! rtph264depay ! h264parse ! omxh264dec ! fpsdisplaysink video-sink=nvoverlaysink text-overlay=false
Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Progress: (open) Opening Stream
Progress: (connect) Connecting to rtsp://b1.dnsdojo.com:1935/live/sys3.stream

(gst-launch-1.0:20824): dconf-CRITICAL **: unable to create file '/home/ubuntu/.cache/dconf/user': Permission denied.  dconf will not work properly.

(gst-launch-1.0:20824): dconf-CRITICAL **: unable to create file '/home/ubuntu/.cache/dconf/user': Permission denied.  dconf will not work properly.

(gst-launch-1.0:20824): dconf-CRITICAL **: unable to create file '/home/ubuntu/.cache/dconf/user': Permission denied.  dconf will not work properly.

(gst-launch-1.0:20824): dconf-CRITICAL **: unable to create file '/home/ubuntu/.cache/dconf/user': Permission denied.  dconf will not work properly.

(gst-launch-1.0:20824): dconf-CRITICAL **: unable to create file '/home/ubuntu/.cache/dconf/user': Permission denied.  dconf will not work properly.
Progress: (open) Retrieving server options
Progress: (open) Retrieving media info
Progress: (request) SETUP stream 0
Progress: (open) Opened Stream
Setting pipeline to PLAYING ...
New clock: GstSystemClock
Progress: (request) Sending PLAY request
Progress: (request) Sending PLAY request
Progress: (request) Sent PLAY request
NvMMLiteOpen : Block : BlockType = 261 
TVMR: NvMMLiteTVMRDecBlockOpen: 7647: NvMMLiteBlockOpen 
NvMMLiteBlockCreate : Block : BlockType = 261 
TVMR: cbBeginSequence: 1179: BeginSequence  1280x720, bVPR = 0
TVMR: LowCorner Frequency = 100000 
TVMR: cbBeginSequence: 1529: DecodeBuffers = 2, pnvsi->eCodec = 4, codec = 0 
TVMR: cbBeginSequence: 1600: Display Resolution : (1280x720) 
TVMR: cbBeginSequence: 1601: Display Aspect Ratio : (1280x720) 
TVMR: cbBeginSequence: 1669: ColorFormat : 5 
TVMR: cbBeginSequence:1674 ColorSpace = NvColorSpace_YCbCr709_ER
TVMR: cbBeginSequence: 1809: SurfaceLayout = 3
TVMR: cbBeginSequence: 1902: NumOfSurfaces = 9, InteraceStream = 0, InterlaceEnabled = 0, bSecure = 0, MVC = 0 Semiplanar = 1, bReinit = 1, BitDepthForSurface = 8 LumaBitDepth = 8, ChromaBitDepth = 8, ChromaFormat = 5
TVMR: cbBeginSequence: 1904: BeginSequence  ColorPrimaries = 1, TransferCharacteristics = 1, MatrixCoefficients = 1
Allocating new output: 1280x720 (x 9), ThumbnailMode = 0
OPENMAX: HandleNewStreamFormat: 3464: Send OMX_EventPortSettingsChanged : nFrameWidth = 1280, nFrameHeight = 720 
TVMR: FrameRate = 29 
TVMR: NVDEC LowCorner Freq = (96666 * 1024) 

(gst-launch-1.0:20824): dconf-CRITICAL **: unable to create file '/home/ubuntu/.cache/dconf/user': Permission denied.  dconf will not work properly.

(gst-launch-1.0:20824): dconf-CRITICAL **: unable to create file '/home/ubuntu/.cache/dconf/user': Permission denied.  dconf will not work properly.

(gst-launch-1.0:20824): dconf-CRITICAL **: unable to create file '/home/ubuntu/.cache/dconf/user': Permission denied.  dconf will not work properly.

(gst-launch-1.0:20824): dconf-CRITICAL **: unable to create file '/home/ubuntu/.cache/dconf/user': Permission denied.  dconf will not work properly.

(gst-launch-1.0:20824): dconf-CRITICAL **: unable to create file '/home/ubuntu/.cache/dconf/user': Permission denied.  dconf will not work properly.
TVMR: FrameRate = 14.987313 
TVMR: FrameRate = 15.019661 
TVMR: FrameRate = 14.805186 
TVMR: FrameRate = 14.993875 
TVMR: FrameRate = 14.970037 
TVMR: FrameRate = 14.979545 
TVMR: FrameRate = 15.030429

Hi,

TVMR: FrameRate = 14.987313

The print shows your source operates in 15fps. You may check if your source can run in 30fps.