VXL ESC issue - need help - please

[schofield]

rustler- specks- VXl brushless 23/90 on 7 cell 4600 - 30 series badlands.

she has run great for the past few months - but recently the esc and battery connector (traxxas plugs) have been getting hot, and she is stuttering like the signal is lost (steering still works), not really cogging but more of a no go - to full reverse - then stop. that sort of thing. do i need to gear for the warmer weather. if i let her cool down she will go again but for a short while. i have not taken a heat reading, just didn't have my temp gauge with me. But it is not to hot i cant hold on to it. the battery still has plenty of juice because when she goes again she back up on her rear wheels. any ideas?