Since it appears on all Source games, maybe your connection is the issue.
Possibly it's a bit unstable. Different games just handle it differently.
You can try a few things to minimize the issue e.g.:
- pay attention to the latency of the server. (should be as low as possible, preferably under 100, not above 200)
- if you're on W-LAN, change to cable connection if possible, otherwise make sure to have a excelent signal strength
- make sure that there are no downloads, torrents, etc. using up your bandwidth (even on other computers or internet radio).
Every additional traffic will result in higher latency for you.
For further investigation you might want to use the ingame statistic tools, too.
If you ain't got the console active allready, right click on the game (steam library), choose properties>launch options, enter -console
close the window with OK.
Boot up the game, there should be a new command line window now, thats the so called console.
Join a game, once it's loaded press ESC, enter in the console: net_graph 1
(net_graph 0 will deactivate it again, 2 and 3 give additional bar graph statistics)
Return to the game, there should be a few statistics in the lower right corner now, telling you about your fps, ping, lerp etc.
When you experience the warp again, pay attention to the values of the net graph.
