title_body: Video breakup problems with high power using The Force VTX?
upvoted_answer: This can be caused by too much heat building up in the VTX causing the electronics to suffer. Try mounting the VTX to have more airflow around it or put a heat sink on it. Sometimes a VTX just can't handle its own output power.  
  
  Another issue might be that electronic noise from the VTX is getting fed back into the video signal at the camera or FC connection point. Adding capacitors to various voltage rails sometimes can help.  
  
  Still another issue could be that the VTX is drawing too much power from the regulator that is supplying it. Try connecting the VTX directly to Vbat if it can take the higher voltage.
  
  In general, noise in the video signal is the bane of FPV video problems. It can be a bit of black magic to fix.