Steam Community randomly disconnecting while in game

[CrowRising]

For some reason, for a few days now I have had this weird issue where when I am in game, steam will seemingly randomly disconnect from Steam Community for a seemingly random length of time. This is preventing me from playing multiplayer games, as well as making it difficult to load Workshop mods in source engine games such as Left 4 Dead 2.

I have noticed a potential link to Fullscreen mode, as while running a test with 2 different games in Window mode, disconnects never happened. The games I tested this with were "Mini Thief" and "Left 4 Dead 2". When running Left 4 Dead 2 in Fullscreen again, after a short while the disconnects started happening again. This could simply be down to coincidence however.

I do not get random disconnects at all while not in game. I can download games just fine, talk to friends, browse the Steam Community, etc. It is only once I am in game that the disconnects happen. I have found no evidence of my entire internet dropping, only Steam Community is getting disconnected from. I also reiterate that this is a new issue for me. A few days ago, I did not have this issue at all.

My system specs:
Operating System: Windows 7 Professional 64-bit
CPU: Intel Core 2 Duo 2.00GHz
RAM: 6GB
GPU: NVIDIA GeForce GTX 1050

[Phantom]

At times, the servers can get wonky.

This causes your client to drop connection.

You'd either have to restart Steam or refresh the page profusely in order to re-gain connection.

You've factored out local connection issues.

These server issues happen during maintenance days - especially Tuesday evenings.

At other times, the servers do get wonky, and expect to be disconnected.