Client X overflowed reliable channel

[Nut]

Hi there Facepunch!
For the better part of the past 2 years I've been running my DarkRP server with the same old and boring content. Roughly 12 days ago I made a switch to a slightly better optimized version of Downtown that I had edited, and around the same timeframe with no major adjustments to my server code and most definitely no new custom content for my community, I began experiencing random drops throughout the day where my playerbase will drop for a reliable channel overflow.
I have been skeptic about it being a potential net exploit because this issue seems to only happen about once up to two times a day, whereas I feel as though if somebody was out to attack my community it would happen far more frequently. I've taken measures such as reading through my server's net code to see if there's anything standing out (all that really showed to be a problem was PermaProp 4.0 and Keypads, both of which were poorly networked, but I doubt are responsible for this). I have been taking addons off of my server slowly waiting for the error to stop, but it doesn't seem to be coming to an end.

Would anybody have an idea as to what is going on or what I could do about the issue?

Here's a little snippet of players dropping due to the error, prior to this there was nothing unusual going on in the logs:
[Connections | 12:24:33]XxAndromedaxX(STEAM_0:0:188449107) has disconnected
Dropped XxAndromedaxX from server (Client 50 overflowed reliable channel.)
[Connections | 12:24:33]jkonstantin(STEAM_0:1:215559888) has disconnected
Dropped jkonstantin from server (Client 51 overflowed reliable channel.)
[Connections | 12:24:33]Vapr(STEAM_0:0:155912883) has disconnected
Dropped chuckie | Garnetgaming.net from server (Client 52 overflowed reliable channel.)
[Connections | 12:24:33]Hooman | Garnetgaming.net(STEAM_0:0:79464028) has disconnected
Dropped Hooman | Garnetgaming.net from server (Client 53 overflowed reliable channel.)
[Connections | 12:24:33]Boom(STEAM_0:0:152442239) has disconnected
Dropped Boom from server (Client 54 overflowed reliable channel.)
[Connections | 12:24:33]TheClassicLeaf(STEAM_0:1:179873831) has disconnected
Dropped TheClassicLeaf from server (Client 55 overflowed reliable channel.)
[Connections | 12:24:33]Ace Degenerate(STEAM_0:1:76482178) has disconnected
Dropped Ace Degenerate from server (Client 56 overflowed reliable channel.)
[Connections | 12:24:33]Dirty nignog(STEAM_0:0:419498687) has disconnected
Dropped Dirty nignog from server (Client 57 overflowed reliable channel.)

[Nut]

2 days later and nothing, fawk.

[Azzy~]

Usually this happens when you send too much data in multiple net messages at once.