1. Yes the first image shown is under 30 minute load with prime 95. My ryzen 5 3600 was at all stock settings (the voltage was high but thats a ryzen 3rd gen problem i need to fix in bios.) My room was around 75 degrees Fahrenheit or 23.8 Celsius.Temps look good, I'm assuming they're for under load?
What's the issue with the cable management? Is there not enough space for the cables as they are now, or do they not bend into the positions you imagined for routing?
For the GPU mounting, I think most of them have something for the riser cable to screw into, so the PCB can add support, plus the retention screw by the back plate. Is there a spot for the retention screw on the back plate?
As for SSD placement, behind the GPU might not be the best place given how hot that can get and the GPU issues you're having. Is there enough space on the front panel to mount them there?
The case itself looks really good, I especially like the way the RGB shines through.
2. Its a bit of both,i need to pay around with how im routing them before i assume its the case,but at the same time the 24 pin is a nightmare to route.
3. For the gpu im considering adding another screw hole in the back panel that'll hold the bottom in place while the bent area in the back holds it up. I need p continue to play around with he hole placement back there too.
4. There isn't enough space to mount it up front as of now. Im currently looking into another way to mount them without them interfering with the power button cable and psu cables like they currently do.
Ill be heading up to a machine shop in the morning to get a few on the easier parts done, then I'll head back and continue editing the design.