Hello 
Just an other approach… I always had problem with DO this type of servers. It was slow for my community activity. So I move the server to Vultr. I think Vultr High Frequency servers are the best in this price. Discourse much prefers the single core faster CPU then multicore slower ones. As I know, only Vultr offers 3GHz+ vCPU on there HF lines. I never have problem with speed on these servers. Super fast and stable! 
I use them 2vCPU, 4GB ram, 128GB NVMe SSD server. I have been using Vultr HF servers for years. Definitely worth to try, I highly suggest it.