Chat Delay on Gmod Server

Whenever I play on WG’s SCP RP Server I sometimes get lag spikes targeted at my chat and it’s commands. In Short:
When it Occurs
I can talk,
I Can Walk
I can shoot
The Chat Box moves normally
Do pretty much anything but;
If i type something in chat it takes about 5-10 minutes to appear
When i type a Command in chat, it takes about 5-10 minutes to activate
When I do anything pac related, it takes 5-10 minutes to do

Does it happen on any other server?