Camber curve goes to shit and bump steer is worse (albeit tolerable, but it's still moving in the wrong direction).
Also when lowered 1.0in, you have 1.9inches of shock shaft showing. Bump stop is 2.17in tall for reference. You'll want to trim the bottom rung off which will bring it to ~1.57in.
Our cars ride the bump stops at nearly all times that weight is transferring (and that is by design).
FWIW I have 034 lowering springs going on myself. I wouldn't worry too much about a 1in drop, it DOES help center of gravity of course. This is basically going to be an experiment of mine to see if lowering is indeed worth it or not. Worst case scenario, next step will be MK7R front springs and back to the OE rears (or something else similar but a tad higher in rate).
I should be posting a video about all this, measurements I took, etc. within a day or two but here's a summary of the ride height part:
View attachment 298627
In short: These cars really don't have enough bump travel in stock form... and lowering them just makes the situation considerably worse. A lot of what I've found explains why my car at stock ride height on track was able to punch way above it's weight grip-wise. All these things need is some better shocks, some camber, and some roll stiffness IMO. I also think playing around with adding suspension packers to the stock front shocks
AT STOCK RIDE HEIGHT (so bump stops engage sooner) may help the car take a "set" earlier and transition faster. Needs to be played with to know for sure though, but suspension packers are cheap and easy to experiment with.
Edited for clarity. Hopefully.