c3000 drops wifi connection with MacBook Pro

Connection is intermittently dropped every 10-15 minutes. Seems to be particular to devices, as newer iPhone models on the same network don't seem to experience this issue.

Note: The Macbook in question (late 2014) works *flawlessly* on all other networks --so it's definitely this router.

Please advise.

(There are other posts reflecting this issue, but none have been met with a actionable reply from the support team.)

Thanks!