Neggy-Z

Have you tried disabling hardware acceleration in your browser?

What would be the point? You're just adding yet another layer of copper to transfer heat through. If you're going to that kind of extreme you may as well lap the ihs flat, would be easier and less risky.

I've had this issue with every driver since 22.7.1 on my 6900xt, sadly newer games such as Diablo 4 require a more up to date driver. The only thing that fixes it for me is a driver restart using Win+Ctrl+Shift+B.

That's just wrong, it's worked fine for me on every AMD card i've owned dating back to at least the HD5000 series cards. Looks like a detection issue to me, it's not detecting your current drivers and displaying 'RX 3750 XT'? in the monitoring graph. I would DDU the current drivers, uninstall AB whilemaking sure to remove the user profile settings, it should prompt for this while uninstalling, then start with fresh drivers and reinstall AB.

I found what you're looking for on Amazon AU via UK https://www.amazon.com.au/EK-RES-X3-Internal-Tube-40mm/dp/B00IYNJPOW A little expensive for what it is but it is available.

Is your graphics card running a UEFI bios? You can check via GPU-Z

Have you tried software controls for the fan? There's a great piece of software here on the forums called FanControl

Another program you could try is openrgb https://openrgb.org/

You're better off just disabling/disconnecting your network/internet so windows doesn't auto download basic drivers

There's also OpenRGB https://openrgb.org/

I would start with carefully removing all the thermal pads, apply fresh paste and see how the contact turns out, if it's fine then your problem is likely due to some of the thermal pads being too thick.

If you can't get all the fluid out due to a rad or block not draining completely i would just flush the system a few times with distilled water, after that just add your coolant, being diluted with a bit of distilled water is better then the superflush.

You just spent $1000+ on a new gpu, surely you can afford the ~$150 for a decent psu?

What case? Can you post a picture of the loop? Does having the side panel off help at all? Sounds like you have very bad or very little air flow.

You kind of need to flip your cpu block so the intake is at the bottom so you can follow the flow from bottom to top. Out of the pump/distro to the gpu then back to the distro, out to the cpu then back to the distro, then finally out to the res and back to the distro. You'll probably need a few offset fittings and some 90 degree angle and extensions if you want clean straight runs. If you don't want to run every component back to the distro then it's kind of pointless having it as that's the whole idea of having one in the first place.