191x7

Check your CMOS battery voltage. Check the CPU-s for bent pins. Make sure you're running Secure Boot enabled, UEFI boot, CSM disabled.

Then keep your RAM and get a 5600 or 5700x instead.

Yes, but try to get the 5600 or 5600X, those are way stronger. The 5500 is a 5600G without the integrated GPU, meaning it has less cache than the regular 5600 or 5600X. Also, beware, there are multiple RTX 3060 that perform differently. Only the 12GB model is the true card. I would recommend looking at an AMD alternative, you can get more performance for the same money.

Ryzen 5 7500F or 7600 32GB (2x16GB) DDR5 6000 B650 motherboard Should be doable.

Could be a faulty PSU or the motherboard; check both for bad capacitors.

With the 6950XT, yes, a huge one. Not in the average and high framerates, but in the drops (low framerates) meaning the smoothness. Talking about mostly PUBG here, on 1440p.

With the RX 6600 you need no upgrade. Eventually the 5700X. I went from a 3600 to a 5900X, both with a 5700XT, then I upgraded to a 6950XT and the 5900X wasn't enough for it, thus I went with the 5800X3D.

Temperatures? Latest motherboard Bios?

Logitech G305?

Free scroll is a gimmick you'll use a few times and then forget about it. As for the additional buttons, the G Pro X Superlight and Superlight 2 have the "G-shift" option which allow you to use a key as "shift" and when you hold it the other keys might have different functions.

Then you need a lightweight mouse, not a heavy one. The G502 weighs about two times the weigh of a good mouse for competitive gaming.

The 6650XT is a faster 6600XT, pretty much the same card. The 5700XT is about the same performance, but it's old and it lacks some newer features some games require to run properly. Looking at Alan Wake 2 as an example. Get the strongest card you can afford.

You can probably go cheaper without any significant performance loss, you could have an uptick in gaming performance... 7600X -> 7600 or 7500F 380$ AIO -> 50$ AIR cooler or a 150$ AIO if you have to. 1650S -> a stronger GPU

Decreasing the details does not increse GPU load, increasing the details and the resolution does. A 3800X will bottleneck a 4080 on all resolutions except maybe 4K. I have the feeling you're on 1080p; a low end resolution with a high end GPU. A 5800X3D would solve the bottleneck if you're on 1440p. For 1080p even a 7800X3D would struggle.

Not Windows Audio settings, the Realtek software (either in the Control Panel the old version or in the Microsoft Store the newer).

Can you show the screenshot of the options in the settings? Here are mine. The last two options.

Here you have the drivers and the Bioses https://www.acer.com/us-en/support/product-support/Veriton_X2632G

Display Driver Uninstaller DDU has the option to clean Realtek drivers too. Maybe try that first. Which motherboard is it? Maybe try with IOBit Driver Booster?

Most Realtek integrated soundcards have the option to split the front from the rear somewhere in the control center.

You mentioned 1080p. On such a PC, that is a crime.

Please give this a watch: Thank you. Since you gave me a chance and a bit of trust by watching the video, here's my idea. Get a cheaper cooler, get a 7900XT or 7900 GRE, and spend the leftover money on a 1440p monitor. That will help you a lot more. The monitor is a thing you look at most of the time, the insides of the case are not.

The cooler you put costs 10 times what the 7800X3D actually needs. Either get a $50 AIR cooler or a $150 AIO. 300+ is overspending money which you could use on other parts. Also, you lack storage in the list and you could do with a white PSU, custom-sleeved cables, etc. Are you playing on 4K? Which games?

Are you playing competitive shooter games?

What does "high-performance gaming" mean?

Here you go https://www.aliexpress.com/item/1005005110869306.html?spm=a2g0o.productlist.main.1.17c6qyc9qyc9LW&algo_pvid=9b59a9b9-b929-4aff-a056-4c280d340a8f&algo_exp_id=9b59a9b9-b929-4aff-a056-4c280d340a8f-0&pdp_npi=4%40dis!EUR!0.48!0.25!!!0.51!0.27!%402103237317106717833275073eade4!12000031697521557!sea!HR!1791877894!&curPageLogUid=nbXMb8H83YN2&utparam-url=scene%3Asearch|query_from%3A https://www.aliexpress.com/item/1005006070223859.html?spm=a2g0o.productlist.main.23.6ad6EHXsEHXsg8&algo_pvid=24b92806-9ee8-4c39-a9fe-0b6ac97705c2&algo_exp_id=24b92806-9ee8-4c39-a9fe-0b6ac97705c2-11&pdp_npi=4%40dis!EUR!6.88!4.82!!!7.31!5.12!%402101fb1617106719146825369ee00b!12000035591272706!sea!HR!1791877894!&curPageLogUid=gdio74qN1i0a&utparam-url=scene%3Asearch|query_from%3A No need to spend more than 10$ to get the same (or worse) audio quality.