The issues is, when CYVR came out, some users experienced CTDs and, as usual, they accused the scenery when, in fact, it was caused by AI so, we had to remove parking codes, which reduced the chance of crashes and in fact, this seemed to have fixed the problem, proving the scenery wasn't the cause...
This was more than a year ago, I can't say if with the current version of MSFS those problems might have been fixed in the sim itself so, perhaps we might have a try and reinstate the parking codes. It would be a bit tricky to reproduce because, I was never able to reproduce any crashes back then, but of course we only test with default AI.