Adding my experience for reference.
GTX1070, i5-7500@3.4ghz, 16gb ram, fresh 1.5beta updated as soon as 2.2 dropped, on an ssd.
First day after patch, no problems at all in sp or mp up to 30 players; smooth experience all around, no issues joining (little long loading but <4 minutes), smooth role selection screen, fast pit loading and zero stutter except for people replaning still giving hiccups long enough to kill you if you're NOE.
yesterday, mixed bag on larger servers; blueflag works pretty well usually, 104th bit more iffy, sometimes throwing me back out to lobby after 2 minutes of loading, then letting me in but with unresponsive role select for minutes, which then slowly recovers and lets me grab a slot and load in without further problems.
This is all in regular 3d, haven't tried mp in VR except for a small server with few people where i had exactly zero issues.
I'd say issues are proportional to playercount, and that the "threshold" for when people experience problems varies somehow with system specs (mostly memory/pagefile?) and how "old" and stuffed your dcs installation is.