WiFi Drops / Disconnects (Orbi RBK50 AC3000)

I'm having some issues with dropped connections. Sometimes on my phone I'll notice a full disconnect -- WiFi network drops, switches to LTE then a minute or so later the WiFi connects again. But on most of my devices, the symptoms are buffering YouTube TV or YouTube or another streaming video service. This issue is only over WiFi. I have a hardwired PC that never drops connection.

Thank you in advance.

My setup:

• Verizon FiOS Gigabit
• RBK50 AC3000 Tri-Band System
• RBR50 is in the basement connected directly to Verizon FiOS ONT through ethernet.
• RBS50 is on the second floor. Backhaul status is good.
• Home is only 1350 sq. ft. so having the modem/router in the basement and satellite on second floor seems to be find and is within the recommended distance (and good backhaul status)

Settings:

• Wireless:
  
  • 2.4GHz Channel: Auto
  • 5GHz Channel: 44
• LAN Setup:
  • IP: 10.0.0.1
  • Range: 10.0.0.2 - 10.0.0.254
  • Set a static IP for Orbi Satellite to 10.0.0.14
• Advanced:
  • Wireless Settings: 
    • Enable 20/40 MHz Coexistence: Unchecked (disabled)
    • Transmit Power Control:
      • 2.4 GHz: 100%
      • 5 GHz: 100%
    • Enable Daisy-Chain Topology: Unchecked (disabled)
    • Enable Implicit Beamforming: Checked (enabled)
    • Enable MU-MIMO: Checked (enabled)
    • Enable Fast Roaming: Checked (enabled)
  • Router / AP Mode: Router Mode

Please let me know if there is any additional information that I can provide.