Heat is causing my solar path lights to go offline during day

I installed 4 solar pathlights last week along the same short path in front of my house. They're bridged to my Echo 10. I live in Palm Springs and I know for a fact that the sun and/or heat is causing my lights to go offline during the day... and it's not even that hot yet. Low 100's. I know because they go offline in sequence as they become exposed to the sun. One reason I ditched my Nest video doorbells and went with Ring is because Ring video doorbells have a higher temperature operating range.. but I'm worried about the solar pathlights not being able to tolerate the hot summers. Anyone else come to this conclusion?