Question PC Troubles - Can anyone help me figure this out?

Aug 28, 2020
PC Specs:
Ryzen 5 2600 - Stock Cooler
ASRock B450M Steel Legend
XPG Spectrix D60G 16GB@3200MHz
ROG RX 580 8GB
Sabrent Rocket 512GB m.2
GameMax 550W RGB PSU
GameMax Kamikaze ARGB

I built this PC (my first) earlier this year (around April) and have had just one issue that has baffled me*. Sometimes when playing games (it doesn't matter if the game is demanding or not, it crashed playing Roblox) and even sometimes when I just turn on my PC my GPU makes this noise like a car revving but it just cant get going (maybe fan speed from 0-30% repeatedly until I turn it off). I don't know if the issue is the PSU or not; as I feel that the 80+ Gold rating on the 550 watts is plenty. However I am suspicious as my mouse and keyboard lose their lighting effects when this issue occurs - although the PSU lighting stays on?

*I have used this PC every day since building it and most of the time its fine

If anyone has a clue what's going on please let me know, I am willing to try solutions that are free as I don't really want to buy another PSU just to find out it was unnecessary,