Ryzen 2000 series featured an improved memory controller over the earlier models such as 1700X. This allowed the next higher frequency RAM speed without OC.
The maximum RAM speed you will get with GA-A320M-S2H is 2666MHz.
I would not recommend using out of spec 3200MHz RAM. You will need to be adept at setting DRAM timings, DRAM voltage, and memory clock to compensate for any differences.
I would not recommend using an A320 Chipset motherboard with a 1700X CPU. A B350 Chipset motherboard only costs $5-$20 more and would be more suitable for the 1700X CPU.