As Capcom stated, the SFxTK PC online teleporting is happened because PC has different hardware specs each other which result different framerate on gameplay. This will make problem when synchronizing rollback frame on online gameplay. Unlike console which have exactly same hardware specs.
You can check framerate on benchmark game. If it show some crazy 90 - 200 fps based on your PC specs then we must fix it. We can make the framerate constant on 60 fps. How do we do that?
Step 1: Turn on Vsync.
Step 2: Turn on Triple Buffering. But how do we do that?
- For Nvidia cards: go to Nvidia Control Center -> 3D Setting
- For ATI cards: download and install Rivatuner and then start D3doverrider app
Make sure vsync is turned on too.
Now we can go back to benchmark game and see its result. Now it show on constant 60 fps.
Try to play online with somebody with this constant 60 fps setting too and see the result! I hope it will help everyone.
This solution is worked on SSF4 AE too.