Wonds

What psu do you have? I'm sure my rx5700 recommends 650w+ I know it doesn't really need that much, but any lower might cause issues.

Can you try the old memory? Or do you mean you just enabled xmp/manually overclocked? Could it be a ram voltage issue? See what its auto setting at in bios.

For me it's only csgo. It's CPU intensive and low settings probably don't help. Others have reported it's like their cards shut down to base clock speeds and then wake up again causing the spikes. COD MW on the other hand, runs fine on the highest settings. Try the csgo beta if power limiting doesn't help.

Agreed, it's a generation thing. Sometimes you can flash a new bios to support the new chip but I believe it's down to power supply/management on the boards not being strong enough.

Some kind of power draw issue? Is it a new pc or old one? Could try a hard reset of the bios, short the jumpers or remove the CMOS battery and see if that resets anything that has been missed. Sometimes works better than the reset option within bios itself. If updating bios and chipset drivers is no help you may want to think about returning the mobo.

Oh also, there is a csgo beta you can apply for via steam where they have released a potential stutter issue fix with Nvidia cards, may help other brands too.

Posted similar response in another topic. I have had issues on an rx5700. Not sure about Nvidia, but try raising power limit to max, raise minimum clock rate to max. If that doesn't work you could try lowering those settings so your card uses less power, if like me you're running csgo on low settings it will be under utilised and will downclock. Causing stutters. May be a placebo but I seem to run smoother with hpet and hdcp disabled. Hdcp is linked to your monitor/hdmi, accessible via Radeon driver monitor settings (possibly in Nvidia settings) and hpet is accessible via device manager under 'system devices' heading.

Try disabling realtek audio (can't remember if it specifies realtek or if it's just onboard audio) in bios. I believe your gpu will supply audio via hdmi if connected to TV and your headset will most likely have its own audio driver. I think the built in audio clashes sometimes. You could also try disabling any unused audio devices in device manager. Hopefully it'll help.

And above post, maybe the human eye cant tell the difference between various fps but it does affect input lag. Also, you could use rivatuner statistic server to lock fps, there's debate about how well that works, but it does seem to keep frame rates rock solid. So no stuttering caused by fps drops.

Not sure if you got this sorted but, for me running 1024x768 low settings on an rx5700 i have to mess around with my power limits and minimum clock rate, as it has some weird downclocking feature. I guess the gpu is under utilised and you need to either up the minimum clock or limit power, both options gave me a big boost in fps on the test map.

Might be worth checking your bios. Reset to stock if possible or clear cmos. It could be low voltage to memory or gpu, try without xmp enabled. If that works you may need to up the voltage to the memory via bios. Was the “faulty” mobo used for overclocking before? Check the cpu settings too, voltage and multiplier etc.