i5, 8GB Ram, R9 290, Win8.1
While playing TTT, I get a stutter every 10-20 seconds making it difficult to play.
Using the net graph, you can see the ping spike (lowest red bars)eg.
I have another machine and this problem does not occur there(same network)
validating files, steam said 2 failed and downloaded them
moving from a HDD to a SDD
quitting the wireless adapter software
checked Windows Firewall
Any ideas of what could be causing the problem would be greatly appreciated
(I will probably re download GMod tonight)