My recently installed Ring Spotlight goes offline around 2 PM and back online at 7 PM. Facts. we have 1 ring doorbell and 2 spotlight cameras. All hard wired for power. All when active RSSI-60. All three within range of WIFI router. Camera in question is equal distance to WIFI as others. No issues with other 2 devices. Saw a post that I may need to look at my router and make changes.
Could be external factors since as you say it happens around the same time.
Once upon a time I had a dawn/dusk device on my porch that killed my DSL connection as dusk when it turned on.
So you might have something similar that turns on/off around those times everyday. Or a neighbor.