Demonic Donut

Budget?

I would try FanControl, it will hopefully give you full access to every fan in the system. You can download it here in the forum.

Try it. It won't break anything. If you are really paranoid, turn the system off first. But I can guarantee it's either fan speed or something to do with RGB.

Good good. I'm not sure what the switch would be. Fan speed? What happens when you flip it?

Needs more love. Are you using isopropyl alcohol?

Are you sure graphics settings didn't get changed? Power settings are correct? Radeon software isn't forcing on any settings etc? The 5500xt should slightly out perform the 1650.

3600 w/ 5700xt here. I average 90-100fps after tweaking settings at 1440p. As others have said, you have to play with settings to get better frame rate. Another random thing, RDR2 is the only game I can't go over 2100mhz with on my GPU. I get terrible hitching/stutters if I do.

Could definitely be the reason, sometimes it comes down to the memory controller on the CPU as well.

You can still stop GPU fans. Easy enough to touch them but if that makes you uncomfortable, use software. You can unplug them too. Or, use a pencil eraser to push gently on the hub to stop the fan if you are worried about safety. It won't hurt the fan. Fan Control, posted on the forum here, controls everything except the PSU fan through software. I use it all the time. Even controls the chipset fan on my mobo.

There is no one test that you can run to promise stability. I recommend using multiple stress tests to verify an OC. Only your use case will prove stability in that program. For example my aggressive GPU overclock is stable in everything I do/use except RDR2. CPU OCs can be the same. Different instructions and programs put different loads on the system Sometimes an OC can also seem perfectly stable until you have something that causes the load on the cpu to go up and down a lot. Personally, I use Prime95, cinebench, blender and the programs I use day to day

This just comes down to multithread support of the given game. For example, Guild Wars 2 is completely CPU bound for me because it seems to only really utilize one thread of my 3600. There's nothing that can be done to increase performance except increase core speed. Other games have better optimization, but very few games seem to use more than 4-6 threads very heavily, in my experience.

Its a good cooler. They are nickel plated copper. Nothing wrong with them. I really wouldn't recommend a cheap AIO. I wouldn't recommend any AIO, personally. The Hyper 212 is a bit over hyped these days as well. It was a good budget cooler years ago, now it has a lot of competition and is underwhelming for it's price. beQuiet coolers are great, and the scythe coolers are usually well reviewed too.

Sorry, swapping motors won't work. The left fan will spin clockwise, sucking air through the middle and discharging it through the slot, the right fan will spin counter clockwise and do the same for air movement.

Noctua U12 is a good cooler. The D15 clears most ram, you can have issues with the fan over the ram. I just used a 120mm fan instead of the included 140mm fan. Check measurements to know for sure.

It won't work the same if you swap motor/blade. The blades need to be the right direction for airflow. Its still an exhaust fan, just mirrored. If the motor rotation is the same, you could just swap motors.