This article may help with buffering: https://support.tablotv.com/hc/en-us/articles/27428931480724-Solving-Buffering-Problems-On-a-4th-Generation-Tablo
Regarding buffering, it’s best to connect your Tablo (and TV) to your Wifi router via an Ethernet cable, if feasible (Tablo buffering info). If not practical, use your Wifi’s 5.0 GHz network (Tablo Wifi support). If you have to use your Wifi 2.4 GHz network select channel 1, 6 or 11 on your router. Select a channel that does not conflict with other broadcasting Wifi networks. Examples of some equipment that might interfere with your 2.4 network are neighbors routers and your printer that have their own SSID that allow printing from iPhones, iPads (Airprint), etc. Your router should have the capability to scan for all broadcasting 2.4 SSID’s, their channels and signal strength. Two notes here. Some router’s default 2.4 channel assignment to “Auto”. This means that if they detect contention, they will select another channel (1, 6 and 11). This can create a moving target. Also my mesh router and newer routers will not let you define 5.0 and 2.4 SSID’s. In this case your end device will select/communicate via 5.0 or default to 2.4 signals.
When/if buffering occurs you can open a “terminal” (command line) window on any PC and ping (windows Ping info) your Tablo and TV’s Wifi interface (Firestick, AppleTV, Roku, SmartTV). Look for consistent “time=” measurements and no dropped packets or errors. If everything looks good but buffering is still an annoying consistent issue, I typically reset my router, Tablo and AppleTV.