Hello,
I'd like to join the question. I have both X-Plane 11 and X-Plane 12 installed. Unfortunately, I'm experiencing fluctuating performance in XP12. Toliss runs great, but Felis not so much. With the IXEG 737, I'm worried I might encounter similar issues in XP12. Does the purchased version work in XP11 or not at all? If so, I'll just stick to flying in the old sim and wait for XP12 to hopefully run better with future updates.
Best regards,
Timo