DannyITR

Hello! I've been using the FBW A320 for several years now. Recently had to reinstall my FS2020 and FBW A320. Recently I've been experience erratic behavour from the autopilot. After takeoff and when approaching my set altitude (usually 5000 ft but happens at any altitude) I'm about to reach the set altittude, the display changes from CLM to ALT as it should but the plane pithces up to 40-50 degrees and stalls. I have to disconnect the AP to save the aircraft and recover. If I bring it down to 5,000 feet and then set the AP it'll hold but then it'll just do it again at the next altitude I want to reach. This doens't happen on every flight! Only 1 out of 4 flights. I thought it might have been me forgetting to put in the ZFW or block fuel amount in the FMC. I made sure to always fill out every page and have all my V speeds correctly calculated. AI tells me it's becuase I don't have a vertical flight profile. Today it happened when leaving YUL to fly into Buffalo which doesn't have a STAR but I really don't think that's it. Last few times it happened when leaving for LaGuardia which has STARS. Is this a BUG? Do I need to buy FS2024 or the Fenix A320?

Hey, I was wondering if there is a program that will allow me to have the left and right seat 2-d cockpit windows open at the same time? Also are there more realistic representations of the 2-d panels availible? Thank you