New GPU/Monitor causing several problems

[jrainbows]

Hi guys,

 

I upgraded to a new GPU and monitor two weeks ago. The GPU is a Gigabyte RTX 2070 Super and the monitor is an Asus VG27AQ. I mainly play Overwatch and wanted to get close to 144 fps on this. But the new set up has led to several (weird) problems.

 

1. I'm not getting a consistent 144 fps in game even with settings on low. I don't really expect to get stable 144, but I would like stable 120 or even 110. As it is, I sometimes get 144, but rapidly changing between 70 and 144. The fps counter is constantly flying between those values and more likely to be around 70. What's more, Sometimes I get extremely stuttering frames, much worse than I saw with my old R9 380X. I've enabled G-Sync on Nividia control panel, windows, in-game and on the monitor and disable Nvidia Shadowplay. GPU temps look fine, it doesn't seem to be under any stress. I've updated my Nvidia drivers and removed my AMD ones. 
2. The second issue is audio. I have my new monitor connected with DisplayPort and an older 1080p monitor connected with HDMI. When I boot the system, audio for both monitors works fine, but after a while (I think it might be after one or both of the monitors sleep) audio stops working from both. I can still hear audio through my headphones, and windows detects both outputs and shows volume levels when I play sounds. I'm not sure if this is related to the monitor or the GPU.
3. The fans on the GPU. When I boot my PC, the fans on the GPU spin up to around 26% of their max, but then keep ramping up higher and coming back down. I've tried resolving this using fan curves in MSI Afterburner, but to no avail. The only workaround I have is to manually set the fan speed to ~37% and then gradually lower that, until its around 26% and then switch to auto, which seems to work.

Any help would be amazing. For reference, my CPU is an i5-6600k on an Asus Z170-A with 16GB of RAM. The CPU is pretty old, but it doesn't seem to be maxing out when I play Overwatch, though it was when I played PUBG and the stuttering made that game unplayable. I've also tried installing the GPU in another slot on the motherboard, but the same results.

 

Thanks