Never Been So Slow, But Variations

Annoying, Im on a dedicated server with plenty power and have never suffered speed issues before with many many options, and have products with hundreds of variations, but even just this one

is slower than Id imagined, can anyone give me some tips

E-2236 Pro Server -
CPU: E-2236 3.4Ghz (6Cores/12Threads)
Memory: 32 GB
SSD: 2 x 1 TB SSD
Operating System: Linux Centos 7.x