In no way are we implying that PMDG has bad programmers. In fact, we all think you guys are brilliant, this aircraft is beyond amazing. But I'm going to have to disagree with you Ryan. When I load the 747X before the 737NGX I do see a noticeably nicer frame rate. I understand that the two share no code, so it may be something within FSX, I'm not sure. And as my aside: early on, someone on the team had mentioned that the frame rates were comparable to the MD-11. This was the deciding factor for me, but after flying around I quickly noticed that this was not the case, not in the least. And when I fly around on VATSIM, I have people PM me and ask if I am experiencing good frame rates..I say no, and every single person I've spoken to has the same issue. You guys have worked tirelessly on this aircraft, and it shows. But not everyone can afford a supercomputer, especially in this economy, to run it somewhat smoothly, and the MD-11 comparison has left a bad taste in my mouth. Though I admit I should have waited for some user feedback before purchasing it. I apologize for using the term "memory-leak" incorrectly, but I think code optimization should be one of the key points in moving forward. That's my opinion, and you can disagree with me all you want...that's fine; I'll just hold off buying the expansion packs. And one more thing: When a large percentage of your customers are expressing frustration about an aspect of your product, it is rather insulting to act as if we are making it up...that reflects more negatively on a company than "bad programming."