Some people get over-excited and tend to not think when they finally get something they've been waiting/paid for. Only when you take it home do you start to see the flaws.
Lesson learnt for OP it seems.
Edward "Don't Sue Me" Lee.
If you're going to release tens of thousands of homes, you need the infrastructure to allow people to move about.
Or... Nuke the place and start fresh.
My R32 had a slight miss and some missing/slurring under load. Idle miss caused by the AFMs (solder fix took care of that). Under load were coil packs, Yellowjackets took care of that (with 1mm gapped BCPR6ES plugs).