Shadowlands has regular reg pops. Solo is spotty at the moment, but you can usually get it going if you form an ops group and shout out in gen chat. The quality of those ranked matches is dependant on who is queing. PvE on SL is better than average, but i haven't done much PvE over the last year or more. There is a toxic element on SL, but it's smaller than other servers, and can be easily ignored or avoided if you want.