So I just flew two missions (with a client reboot in the middle) in my Spitfire Ia. Both times, the screen was freezing/jumping around, lag was high and I was suffering 100% packet loss at times. Even clan chat was intermittently slow.
I checked my connection (5G), and speed test shows 130 Mbps download, and other internet connected applications run well.
I've had this freeze/lag/jump stuff happen occasionally in the past, but I was able to usually play through it despite the difficulty.
I actually quit the second battle before it was over (something I NEVER do) because there was no point. When the screen freezes and I can see the bot-driven plane right next me, and can't do a thing to evade his attack, when it unfreezes I'm dead.
I'm going to try again later tonight, but if it's the same thing I'm going to petition WG for a credit to my premium time, as this is ridiculous.
It's worth noting that it doesn't appear to be widespread, as other players in those battles seemed to do OK. But as of 5 minutes ago, WOWP is completely unplayable for me and therefore a complete waste of my time.