Morco

I updated all the drivers and apart from that, there are no other softwares that actually control or influence the periferals. It was probably the problem @TUGiF mentioned above I guess and it is fixed for now, thanks for you help though.

are there any softwares that control these? have you tried driver updates? just thought i would ask 

I have the same Motherboard as you and i had the same Problems.
 
The only Thing that worked for me ( so far ) is to plug in all your USB Devices to the USB 3.0 and 3.1 Ports.
 
Some People told me, that there isn't enough Voltage on the USB 2.0 Ports so it randomly disconnects.
 
Hope this Helps :)

Then you should definetly go with more capactiy.

That is a whole different scenario and not compareable. We're talking 3x to 4x the core count here. That's why AMD does not include coolers with Threatripper.

It is true that you will lower the temps with an aftermarket cooling solution, but the thermals will have no more than a marginal effect on lifespan. Your CPU will long be outdated before you run into problems that were caused by too much heat, especially since the CPU is not running at throttling temps, which help to protect the CPU from thermal wear.

If you don't want to overclock, the included cooler will do just fine. That being said, the CPU can indeed get quite toasty even when running at idle, putting out temps around 50°C and up to 70°C when under load according to my own experience with the 3700X. Given the higher clock speeds, the 3800X might run a little hotter, but still nowhere near throttling. 
Also, the cooler can get a bit noisy, which I personally don't really have a problem with at the moment, but I'm still planning to upgrade to an AIO later on. So far though, the Wraith Prism is a good enough cooler for daily use. 

Comparing processors doesn't work like that though. The threadripper is an entirely different chip, with a different socket and with different requirements.
Apples != Oranges

If this was a Threadripper with an air cooler I would definitely say change to AIO, but it’s not, you can’t compare them because of TDP, much higher core count, and different sized die, causing higher heat. Not good to compare them because of these factors and different cooling solutions need for each one. 

If you don't want to overclock, the included cooler will do just fine. That being said, the CPU can indeed get quite toasty even when running at idle, putting out temps around 50°C and up to 70°C when under load according to my own experience with the 3700X. Given the higher clock speeds, the 3800X might run a little hotter, but still nowhere near throttling. 
Also, the cooler can get a bit noisy, which I personally don't really have a problem with at the moment, but I'm still planning to upgrade to an AIO later on. So far though, the Wraith Prism is a good enough cooler for daily use. 

It is true that you will lower the temps with an aftermarket cooling solution, but the thermals will have no more than a marginal effect on lifespan. Your CPU will long be outdated before you run into problems that were caused by too much heat, especially since the CPU is not running at throttling temps, which help to protect the CPU from thermal wear.

The stock cooler will be fine. It's more than adequate for daily use. And fair if you want to put a small oc on your chip someday.

Your PSU should be able to handle the new graphics-card no probs. 

From my experience, they all sustain their advertised speeds in sequential read/write, but outside of that they can strongly differ. i would also go for a 2tb drive though, because gen 4 pcie ssds are so fast that you wont really benefit from raid 0 in real world scenarios anyway i guess. 
 
to get back to your question though, i think corsairs drives have good reputation. i myself have a patriot viper vp4100 1tb and i'm pretty satisfied. 

From my experience, they all sustain their advertised speeds in sequential read/write, but outside of that they can strongly differ. i would also go for a 2tb drive though, because gen 4 pcie ssds are so fast that you wont really benefit from raid 0 in real world scenarios anyway i guess. 
 
to get back to your question though, i think corsairs drives have good reputation. i myself have a patriot viper vp4100 1tb and i'm pretty satisfied. 

I assume you're playing at 1080p right?
Then i would probably honestly go for a ryzen 5 3400G. The cpu will make for good upgradeability to a discrete gpu if you want to and the vega graphics are superior to intel imho. and it is not too expensive either.
 
Edit: You could also go for a 2400g, since it has the same integrated graphics chip, but for like 30 bucks more you can have a newer generation cpu with a little higher core-clock.

144Hz is great as long as you got the hadware to power it, i have been using 60Hz for a long time (keep in mind that i dont notice a big difference with 75) and 144 seems to be a big upgrade.

I’ll never be able to go 60hz again after going 144hz

exactly.

"With CORSAIR iCUE support, you can monitor power supply performance, toggle single rail or multi rail mode, and control fan speed directly from your desktop."
 
https://www.corsair.com/ww/en/Categories/Products/Power-Supply-Units/hxi-series-config/p/CP-9020072-AU

exactly.

"With CORSAIR iCUE support, you can monitor power supply performance, toggle single rail or multi rail mode, and control fan speed directly from your desktop."
 
https://www.corsair.com/ww/en/Categories/Products/Power-Supply-Units/hxi-series-config/p/CP-9020072-AU

The newest batch of the 1600 marked as AF are Zen+ parts, closer to the 2600 than the old 1600.
Go with that. But don't go with an A320 board, get at least a B450.

I guess it really depends how far you are actually sitting away from it. Obviously, the closer you go, the uglier it's gonna look on larger displays. So if you are sitting rather close to it, i guess i would stick with 65" max, whereas if you are sitting further away, bigger displays should be fine, although 75" displays are mostly overpriced in comparison to most 65" displays imho.

I guess you could but i would get a better cooler just to have a bit more headroom.