Tuesday
Using fibre from Telus. Paying for 1 GB. The first day, I was able to achieve 600 mbps, but then it seemingly randomly dropped to less than 100. It seems that when the tv box is connected, we lose internet wifi. We have 3 boxes distributed across two houses. Rural property. No cell service here, so need reliable wifi for phones. My IT person has been unable to figure out where the problem lies. New Telus modem.
Wednesday
Have you already attempted restarting your equipment as well?