Huge problem when gaming! Fans speeds fire up with ping!

[pilky140]

It's kind of hard to explain but I'll have a go.
Within the past week I've been having serious issues when playing games. Mainly CSGO and Arma3. When I boot up CSGO, all is well, when I start a game my fan speeds increase massively (R9 290) and my ping shoots up to the 600-800ms range. Obviously rendering it unplayable.

The same thing happens with Arma. Although the fan speeds have always kicked in a little more with Arma due to its higher demand for vram, the ping is unplayable and will nearly always result with me being kicked from the game.

Now I've spoken to my broadband supplier and all is well. My connection is fine so is my ping and packet loss.
When I run speed/ping tests on my end, all seems to be well too. Until I launch a game.
I've already tried CCleaner, Advance SystemCare 9, Full virus/malware scans too.

Can anyone shine some light on this for me? Is it possible the two things are somehow linked?
Thanks in advance guys and girls! I do appreciate it!

i5-4690k
R9 290

Let me know if there's anything else you need to know!

 

[maxwellmelon]

how much ram do you have?
have you checked your cpu temp? gpu temp? at idle and when attempting to game for a few min.
what is your cpu Freq showing as while gaming?
what is your FPS in game?
what is your actually ping, and speed show from an independent test site like speedtest.net?
are you experiencing packet loss? you mention it but don't say if your losing any