OVH's network is horrible in regards to consistency, ping spikes every few hours for some regions, complete outages at times for other regions, they just aren't the best for a game such as Arma where the slightest crash can cause you to die. This is all understandable however as their network is crowded af when compared to others networks such as Choopa.
I personally now run a server from ReliableSite which can be more expensive if you aren't going for the community deals they are offering which contain some nicer older generation servers (Ivy Bridge and Haswell) which still get the job done nearly as well as their current generation counterparts. Only downside to going with a smaller network however is the DDoS protection, you'll have to find some third party solution to handle this as no network is going to be able to compete with OVH's protection for the small price of freeeeeeeeeee.