New system with newest software (9.1 I think). 2 main repeaters, each has one aux repeater. One pair works perfectly. The other pair has to be rebooted every few days because some of its master switches stop responding. The only difference I can tell between the two is that my problem repeaters are farther away from each other - just under 70 feet and both behind doors. I notice that I also have to reboot them just before uploading programming or I get several device failures.

Could a weaker signal cause these problems to accumulate over time and then temporarily straighten out after a reboot? If so, would adding an auxiliary repeater in-between them be the solution?

Thanks in advance.