[SOLVED] Is this a Bottleneck?

[HeroYT]

So I recently purchased a Ryzen 5 1600 AF (the 12nm refresh of the original 14nm Ryzen 5 1600) with the hopes that it would improve my gaming performance. To make a long story short, no, it didn't. I have been experiencing MAJOR frame drops in games that are heavily GPU intensive. I will get a steady 144 fps one second and the 20 the next. My current system specs are as follows:
Ryzen 5 1600 AF
Radeon RX 560 OC 2gb
16gb DDR4 Memory at 3200mhz speed
GIGABYTE A320M - S2H
2x 500gb SATA SSD
ThermalTake Smart Series 500w PSU

With all of my specs, I think my GPU is a bottleneck and is hindering my gaming performance. I am looking to upgrade to a Nvidia GTX 1660 Super, and was wondering if this would fix the problem.

 

[BagOwl]

The 1660 super would be a HUGE jump in performance. Go for it!
I have the same CPU with a 1660 super and it destroys my previous RX 570.