Wahoo kickr looses grip\power near top of long climbs

When I near the top of 3 sisters radio tower, alp d’zwift or Ven-top my power goes to near zero and I just spin while nearly stopping no matter how hard or fast I pedal. This lasts for about 10 seconds then back to normal, only about 20 places further back. It happened 2 or 3 times Sunday on Ven-top. Is there a setting to stop this please?

Have you seen anything like this?

Not seen that. Makes sense, although I don’t believe I’m hammering it hard enough for it to overheat in a 68 degree fahrenheit basement. I’ll try getting a small fan and see if keeps happening. It’s a 2017 kickr. Thank you for the help!